Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| abomasal | relating to the abomasum, the fourth of the four stomachs of a ruminant. |
| abomasum | (Lat.) the fourth of the four stomachs of a ruminant. |
| abomasus | (Lat.) the fourth of the four stomachs of a ruminant. |
| abranchial | lacking gills. |
| abranchiate | lacking gills. |
| acaudal | tailless. |
| acaudate | tailless. |
| acephalic | headless. |
| acerous | of, like or resembling a needle. |
| acoelous | not having a stomach. |
| acrodont | having teeth fused with the jaw; (noun) an acrodont animal. |
| actinomere | one of any opposite symmetrical or homotypic parts in animals and plants. |
| adactylous | lacking fingers or claws. |
| agnathous | lacking jaws, esp of hagfish and lampreys. |
| alar | of or pertaining to the wing or shoulder. |
| alary | of or pertaining to the wing or shoulder. |
| aliped | having wings on the feet; (noun) a creature with winged feet. |
| ameboid | resembling an amoeba; changing in shape like an amoeba. |
| amoebiform | resembling an amoeba; changing in shape like an amoeba. |
| amphipodous | having both walking and swimming feet. |
| anarthrous | without distinct joints. |
| anarthrously | (Adv.) ANARTHROUS, without distinct joints. |
| anarthrousness | the state of being anarthrous. |
| anisocercal | of fish, having unequal tail-lobes. |
| anourous | having no tail. |
| antimere | one of the two halves of bilaterally symmetrical animals. |
| antimeric | of or like an antimere, one of the two halves of bilaterally symmetrical animals. |
| antimerism | the state of having antimeres. |
| antler | the horn of an animal of the deer family. |
| antlered | bearing antlers. |
| anural | having no tail. |
| anurous | having no tail. |
| aplacental | having no placenta. |
| apod | an animal without feet or ventral fins. |
| apodal | lacking feet. |
| apode | an animal without feet or ventral fins. |
| apodous | footless. |
| arthrodia | in zoology, a joint. |
| arthrodial | relating to arthrodia, a joint. |
| artiodactyl | an animal having an even number of toes on each foot, such as pig, camel, cattle, deer. |
| artiodactylous | of or like an artiodactyl, a two-toed animal. |
| backfat | the layer of fat between the skin and muscle in animals. |
| baculum | (Lat.) the penis bone in some mammals. |
| baleen | whalebone. |
| befinned | having fins. |
| bez | the second tine of a deer's horn. |
| bicaudal | having, or terminating in, two tails. |
| bicornate | having two horns or hornlike parts. |
| bicornuate | having two horns or hornlike parts. |
| bidental | having two teeth; (noun) a creature having two teeth; a place struck by lightning then consecrated. |
| bimanous | relating to Bimana, two-handed animals, an obsolete name for mankind. |
| bipedal | having two feet; spec. using the hind limbs for locomotion. |
| bipedality | the state of being bipedal, having two legs. |
| bipedally | (Adv.) BIPEDAL, having two feet. |
| bisulcate | cloven-footed. |
| blastopor | the opening of the archenteron in the gastrula that develops into the anus of some animals. |
| blastoporal | like a blastopor. |
| blastopore | the opening of the archenteron in the gastrula that develops into the anus of some animals. |
| blowhole | a hole for breathing through; the nostril of a whale etc. |
| bosset | a rudimentary antler found on a young deer. |
| branchia | (Lat.) a gill. |
| branchial | of or relating to gills. |
| branchiate | furnished with branchiae; as, branchiate segments. |
| bunodont | having tuberculate molars. |
| calipash | a part of a turtle which is next to the upper shell, aka carapace. |
| calipee | a part of a turtle which is attached to the lower shell, aka plastron. |
| callipash | a part of a turtle which is next to the upper shell. |
| callipee | a part of a turtle which is attached to the lower shell, aka plastron. |
| cambrel | the joint in the upper part of a horse's hind leg, the hock. |
| carapace | the shell of an animal such as a turtle or armadillo. |
| carapaced | having a carapace. |
| carapacial | of or like a carapace. |
| carapax | the shell of an animal such as a turtle or armadillo. |
| cauda | the area behind an animal's anus. |
| caudal | of or pertaining to the tail. |
| caudally | (Adv.) CAUDAL, of or pertaining to the tail. |
| caudated | having a tail. |
| caudation | the state of being caudate, with a tail. |
| celom | (Greek) a fluid-filled cavity within the body of an animal. |
| celomic | of or like a celom, a fluid-filled cavity within the body of an animal. |
| cephalate | having a head. |
| cercal | of or pertaining to the tail. |
| cheekpouch | a dilatation of the cheek forming a bag, eg as in a chipmunk. |
| chlamydate | of molluscs, having a mantle. |
| chondroskeleton | the cartilaginous part of the skeleton of vertebrates. |
| chordate | having a backbone; (noun) an animal having a backbone. |
| clasper | a clasping organ. |
| cloot | (Scots) a division of a cloven hoof. |
| coelom | (Greek) a fluid-filled cavity within the body of an animal. |
| coelomata | animals having a coelom, of the group Coelomata, which includes the annelids, molluscs, arthropods, echinoderms, and chordates. |
| coelome | (Greek) a fluid-filled cavity within the body of an animal. |
| coelomic | relating to the coelom, a fluid-filled cavity within the body of an animal. |
| cormus | (Lat.) the differentiated body of a cormophyte; the whole body of a compound animal. |
| corneous | horny. |
| cornute | with hornlike outgrowths; (verb) to cuckold. |
| coronoid | pertaining to or designating projections of bone likened to a crow's beak. |
| cosmin | a substance resembling dentine forming the outer layer of cosmoid scales. |
| cosmine | a substance resembling dentine forming the outer layer of cosmoid scales. |
| cosmoid | of the scales of coelacanths and lungfish, formed of two bony layers covered by a layer of cosmine. |
| cotyloid | a small bone forming part of the acetabular cavity in some mammals. |
| cotyloidal | a small bone forming part of the acetabular cavity in some mammals. |
| craniate | having a skull or cranium; (noun) a craniate animal. |
| crena | (Lat.) a notch or tooth. |
| crinate | having hair. |
| crinated | having hair. |
| crista | (Lat.) a ridge or fold resembling a crest. |
| cristate | with an appendage resembling a crest. |
| cristated | with an appendage resembling a crest. |
| croche | (Fr.) a knob at the top of a deer's horn. |
| crumen | (Lat.) a deer's tear-pit. |
| crusta | (Lat.) a hard coating a cocktail served in a glass, its rim coated with sugar |
| ctenoid | with comblike edge, eg of fish scales. |
| curvicaudate | having a curvy tail. |
| curvicostate | having curved ribs. |
| cuticle | any of various outer layers in a plant or animal, esp a noncellular protective film covering the epidermis in a plant or insect. |
| cuticular | relating to a cuticle, any of various outer layers in a plant or animal. |
| cynopodous | having claws that do not retract, as dogs. |
| denticle | a small toothlike structure, as on the skin of a shark. |
| dewclaw | a vestigial digit or claw. |
| dewclawed | having a dewclaw. |
| dewlapped | having dewlaps. |
| dewlapt | having dewlaps. |
| dichoptic | having eyes distinctly separate. |
| didactyl | an animal having only two digits. |
| didelphic | having a double womb, like a marsupial. |
| digitated | of a leaf, divided into fingerlike parts. |
| diphycercal | of fishes, etc, having the tail symmetrical about the vertebral column, |
| diphyodont | having a second set of teeth that replaces the first; (noun) a diphyodont mammal. |
| diplozoic | of animals, bilaterally symmetrical. |
| dorsal | relating to the back, situated on the back (noun) a dorsal fin |
| dorsally | (Adv.) DORSAL, relating to the back. |
| dug | the teat or udder of a female mammal. |
| duplicident | of certain animals, such as rabbits, having two pairs of incisors in the upper jaw. |
| ecaudate | tailless. |
| echinate | prickly like a hedgehog, bristly. |
| echinated | prickly like a hedgehog, bristly. |
| edental | without teeth, as of anteaters, armadillos, and sloths. |
| edentate | without teeth; (noun) an edentate animal, as an armadillo or sloth. |
| electrocyte | a specialized muscle or nerve cell that generates electricity. |
| encolure | (Browning) a horse's mane. |
| endoskeletal | relating to the endoskeleton. |
| endoskeleton | an internal skeleton or supporting framework in an animal. |
| enterate | having an alimentary canal. |
| entoplastral | relating to the entoplastron, the unpaired plate behind the epiplastra in a turtle's plastron. |
| entoplastron | the unpaired plate behind the epiplastra in a turtle's plastron. |
| epignathous | having a protruding upper jaw. |
| epiplastral | relating to an epiplastron, either of the two anterior lateral plates in the plastron of a turtle. |
| epiplastron | either of the two anterior lateral plates in the plastron of a turtle. |
| episternum | a median bone connected with the sternum. |
| excaudate | tailless. |
| exuviae | (Lat.) cast-off skins, shells or other coverings of animals; fossil remains of animals. |
| exuvial | of or pertaining to exuviae, cast skins, shells, or coverings of animals. |
| exuvium | (Lat.) the moulted covering of an animal. |
| falcula | (Lat.) a curved and sharp-pointed claw. |
| falculate | curved and sharp-pointed, like a falcula, or claw of a falcon. |
| fangless | destitute of fangs or tusks. |
| fanglike | like fangs. |
| fetlock | a tuft of hair immediately above horse's hoof. |
| fetlocked | having fetlocks. |
| filum | (Lat.) a threadlike anatomical structure. |
| fimbria | (Lat.) a fringe; any of the threads or other projections forming a fringe. |
| fimbrial | pertaining to or having a fringe. |
| finless | destitute of fins. |
| finny | having fins. |
| fishbone | a bone of a fish. |
| fissicostate | having divided ribs. |
| fissilingual | having a forked or cleft tongue. |
| fissiped | with digits separate; (noun) a fissiped animal. |
| fissipedal | having toes that are separated from one another, as dogs, cats, bears, and similar carnivores. |
| fissipede | with digits separate; (noun) a fissipede animal. |
| flabelliform | shaped like a fan. |
| flagelliform | shaped like a whip. |
| flew | the pendulous upper lip of a bloodhound or similar dog. |
| flewed | (Shakesp.) furnished with hanging lips, as hounds are. |
| floccus | (Lat.) the tuft of hair terminating the tail of mammals. |
| forefoot | one of the front feet of a quadruped. |
| forehoof | the hoof of a forefoot. |
| foreleg | one of the front legs of an animal. |
| forelimb | a front limb eg of a horse. |
| forepaw | a front paw. |
| forequarter | the front half of a lateral half of the body or carcass of a quadruped. |
| foreshank | the upper part of the foreleg of cattle. |
| fossette | (Fr.) a small hollow or depression, as in a bone or shell. |
| fossorial | adapted for burrowing or digging, eg of claws. |
| fossula | (Lat.) a small depression or groove. |
| foxtail | the tail or brush of a fox. |
| frogeyed | having frog eyes. |
| fud | a rabbit's or hare's tail. |
| gambrel | the joint in the upper part of a horse's hind leg, the hock. |
| ganoin | the hard shiny substance resembling enamel which forms the outer layer of ganoid fish-scales. |
| ganoine | the hard shiny substance resembling enamel which forms the outer layer of ganoid fish-scales. |
| gaskin | the hind leg of horse between the stifle (knee) and hock (tarsal joint of the hind leg). |
| gizzard | the second, or true, muscular stomach of birds, in which the food is crushed and ground. |
| glabrate | smooth, esp having a surface without hairs or projections. |
| glabrous | smooth, esp having a surface without hairs or projections. |
| glabrousness | the state of being glabrous. |
| gressorial | adapted for walking. |
| gressorious | adapted for walking. |
| hardparts | the skeletal parts of an organism. |
| heterocercal | having the vertebral column passing into the upper lobe of the tail, which is usually larger than the lower, as in sharks. |
| heterocercality | the state of being heterocercal. |
| heterocercy | the state of being heterocercal. |
| hindfoot | a rear foot. |
| hindleg | a rear leg. |
| homocercal | of fishes, having the upper and lower lobes of the tailfin alike. |
| homocercy | the condition in fish of having a symmetrical tail. |
| hoof | the hard covering of animal's foot (verb) to dance |
| hoofless | destitute of hoofs. |
| hooflike | like a hoof. |
| horn | a hard, bonelike projection of the head (verb) to form a horn |
| hornedness | the condition of being horned. |
| hornless | having no horns. |
| hornlessness | the state of being hornless. |
| hornlet | a little horn. |
| hough | a large beast's tendon; (verb) to cripple by tying the legs together. |
| hyoplastral | of or like a hyoplastron. |
| hyoplastron | in a turtle's plastron, a plate between the hypoplastron and the entoplastron. |
| hypognathous | having the lower jaw or mandible protruding. |
| hypoplastron | the plate behind the hyoplastron in a turtle's plastron. |
| hypural | situated beneath the tail. |
| imparidigitate | having an odd number of fingers on each limb. |
| indumentum | (Lat.) a total body covering of hair, fur or feathers. |
| interneural | situated between the neural spines or spinous processes of successive vertebrae. |
| iridocyte | a cell in the skin of a fish that gives the fish iridescence. |
| jawless | without jaws. |
| jubate | having or possessing a mane. |
| keratose | of certain sponges, having a horny skeleton. |
| kype | the hook on the lower jaw of a mature male salmon. |
| labium | (Lat.) a lip, or liplike organ. |
| languet | (Fr.) a tonguelike appendage or outgrowth. |
| languette | (Fr.) a tonguelike appendage or outgrowth. |
| laniferous | wool-bearing. |
| lanigerous | wool-bearing. |
| lanuginose | downy; covered with fine soft hair. |
| lanuginous | downy; covered with fine soft hair. |
| leptocercal | slender-tailed. |
| lobus | (Lat.) a lobe. |
| longicaudate | long-tailed. |
| loppy | pendulous (noun) in Australia, a man employed to do maintenance tasks on a ranch |
| loricate | covered with an armor, such as scales or bony plates on reptiles; (verb) to coat or armour protectively. |
| lytta | (Lat.) a small ligament in a dog's tongue. |
| macrodactyl | of an animal, having long fingers or toes; (noun) one of a group of wading birds. |
| mammate | having breasts. |
| maned | having a mane. |
| maneless | without a mane. |
| maniplies | the third stomach of a ruminant, aka omasum or psalterium. |
| manubrial | shaped like a handle. |
| manyplies | the third stomach of a ruminant, aka omasum or psalterium. |
| marsupium | (Lat.) the pouch, formed by a fold of the skin of the abdomen, in which marsupials carry their young. |
| megalopic | having large eyes. |
| merome | one of the serial segments, or metameres, of which the bodies of vertebrate and articulate animals are composed. |
| merosome | one of the serial segments, or metameres, of which the bodies of vertebrate and articulate animals are composed. |
| mesoblast | another name for the mesoderm, the middle germ layer of the embryo in early development. |
| mesoblastic | like a mesoblast. |
| mesomere | an embryonic segment. |
| metameric | relating to a metamere, a serial division or segmentation of a body. |
| metamerically | (Adv.) METAMERIC, relating to a metamere, a serial division or segmentation of a body. |
| microdont | having unusually small teeth. |
| moniplies | the third stomach of a ruminant, aka omasum or psalterium. |
| monocardian | having an undivided heart; (noun) a creature that has only one heart. |
| monocerous | having only one horn. |
| monodactylous | one-toed or one-fingered. |
| monodont | one-tusked, like a narwhal. |
| monophyodont | an animal with only one set of teeth. |
| monyplies | the third stomach of a ruminant, aka omasum or psalterium. |
| mouthless | destitute of a mouth. |
| mouthpart | part of a mouth. |
| multungulate | having the hoof divided into more than two parts; (noun) a multungulate animal. |
| muzzle | to put a covering over the mouth of to prevent biting or eating. |
| neuromast | a sensory cell in fish. |
| notochord | a backbone-like series of cells in the lowest vertebrates. |
| notochordal | relating to the notochord, a backbone-like series of cells in the lowest vertebrates. |
| nudicaudate | with hairless tail. |
| oculate | having eyes. |
| oculated | having eyes. |
| odontostomatous | having biting or toothed jaws. |
| omasal | relating to the omasum, the third of the four stomachs of a ruminant. |
| omasum | (Lat.) the third of the four stomachs of a ruminant. |
| opercele | an anatomical part that serves as a lid or cover. |
| oscule | a small mouthlike aperture. |
| osselet | a hard substance growing on the inside of a horse's knee. |
| ostiate | having an ostium (a mouthlike opening) or ostia. |
| overhair | the long hair overlying the fur of some animals. |
| packwax | the strong tendon in an animal's neck. |
| palamate | webfooted. |
| paleate | having scales. |
| paries | (Lat.) a wall of hollow organ or cavity. |
| parotoid | any of various glands which form warty excrescences behind the eyes in some amphibians, esp toads. |
| pastern | the part of horse's foot between the fetlock joint and the upper edge of the hoof. |
| patagial | of or like a patagium, a web of skin between the forelimbs and hind-limbs of tree-dwelling creatures. |
| patagium | (Lat.) a web of skin between forelimbs and hind-limbs of tree-dwelling creatures, that acts as a wing, as in bat or flying squirrel. |
| paw | a clawed foot; (verb) to scrape with a paw. |
| paxwax | the strong tendon in an animal's neck. |
| pecten | (Lat.) a comblike structure of various kinds eg in a bird's or reptile's eye. |
| pedicled | having pedicles, bony protrusion of the skull from which an antler grows. |
| pelage | (Fr.) an animal's coat of hair or wool. |
| pelon | a hairless person or animal. |
| pentadactyl | having five fingers or toes to each hand or foot; (noun) a pentadactyl animal. |
| pentadactylic | having five digits. |
| pentadactylism | the state of being pentadactylic. |
| pentadactylous | having five digits. |
| perennibranch | retaining the gills throughout life; (noun) a perennibranch creature. |
| peristomatic | relating to the peristome, the area, or a structure, surrounding a mouth. |
| peristome | the area, or a structure, surrounding a mouth. |
| peristomial | relating to the peristome, the area, or a structure, surrounding a mouth. |
| pholidosis | the arrangement of scales, as in fish and reptiles. |
| photogen | a light-producing organ in animals. |
| photogene | an afterimage. |
| placoid | having platelike scales; (noun) a fish with platelike scales. |
| plantigrade | walking on the soles of the feet, as humans do; (noun) a plantigrade animal. |
| pleopod | a swimming leg (an abdominal appendage of shrimps, lobsters, and isopods for locomotion or respiration). |
| pleurodont | with teeth attached to the inside of the jawbone, rather than rooted in it; (noun) a pleurodont animal, such as a reptile. |
| podophthalmous | having eyes on stalks, like some crabs. |
| postaxial | situated behind any transverse axis in the body of an animal. |
| postocular | behind the eye; (noun) a scale situated behind the eye of some lizards. |
| preaxial | situated in front of any transverse axis in the body of an animal. |
| preaxially | (Adv.) PREAXIAL, situated in front of any transverse axis in the body of an animal. |
| precaudal | in front of the caudal fin. |
| prehensile | adapted to seize or grasp, esp by wrapping round; as, the prehensile tail of a monkey. |
| prehensility | the state of being prehensile. |
| prehensive | prehensile, related to grasping. |
| prehensor | something that grasps or seizes. |
| prehensorial | prehensile, related to grasping. |
| prehensory | adapted to seize or grasp; prehensile. |
| premandibular | in front of the lower jaw; (noun) a bone so placed in fishes, etc. |
| prepollex | (Lat.) in some animals, a rudimentary innermost finger. |
| prepubis | the animal hip bone. |
| prosoma | the anterior of the body of an animal, as of a cephalopod; the thorax of an arthropod. |
| prosomal | relating to the prosoma, the anterior of the body of an animal. |
| protrusile | that can be protruded. |
| psalterium | (Lat.) the third stomach of ruminants. |
| pseudopodium | a process protruding from the cell of a protozoan, etc, used for movement or feeding. |
| pterion | (Greek) a suture in the skull. |
| pterygial | of or relating to a wing or fin; (noun) a bone in a fin. |
| pterygium | a vertebrate limb. |
| pulvillar | cushion-like. |
| pygal | the posterior median plate of a chelonian carapace. |
| quadrumanous | of apes, etc., with all four feet adapted for use as hands. |
| quadrupedal | having four feet. |
| radulate | having a radula, a mollusc's tongue, that is studded with tiny teeth. |
| raphe | (Lat.) a seamlike junction. |
| reticulum | (Lat.) the second stomach of a ruminant. |
| rhodophane | the red pigment contained in the inner segments of the cones of the retina in animals. |
| ribless | having no ribs. |
| rictus | (Lat.) a gaping mouth; an orifice. |
| rumen | (Lat.) the first of the four stomachs of a ruminant. |
| ruminal | of or like the rumen. |
| sac | in biology, a baglike structure. |
| salpiform | shaped like a barrel. |
| sawtooth | one of a set of teeth resembling a saw, as on certain sharks. |
| scaleless | destitute of scales. |
| sclerite | a hard chitinous or calcareous process or corpuscle, esp a spicule of the Alcyonaria. |
| scleritic | of or like a sclerite, a hard chitinous or calcareous process or corpuscle. |
| sclerodermatous | hard-skinned; having bony armour. |
| sclerodermic | hard-skinned; having bony armour. |
| sclerodermite | the integument of a segment in arthropods. |
| sclerodermous | hard-skinned; having bony armour. |
| sclerotal | a sclerotic bone or plate. |
| scopa | (Lat.) a brushlike tuft on back legs or abdomen of bees. |
| scut | the tail of eg a rabbit. |
| scute | a hard exoskeletal plate. |
| scutellar | like a scutella, a small scute, a hard exoskeletal plate. |
| scutellate | shaped like a platter; covered with scutellae. |
| scutellated | shaped like a platter; covered with scutellae. |
| scutellation | an arrangement of scales or plates on an animal's body. |
| scutum | (Lat.) a hard exoskeletal plate. |
| secodont | having cutting teeth; (noun) an animal having cutting teeth. |
| sectorial | adapted for cutting; (noun) a tooth designed for flesh-eating. |
| selenodont | having crescent-shaped ridges on the crowns of the molar teeth; (noun) a selenodont animal. |
| sensilla | (Lat.) in insects, a small sense organ on the integument. |
| sensillum | (Lat.) in insects, a small sense organ on the integument. |
| septal | of or pertaining to a septum or septa, as of a coral or a shell. |
| sericterium | a silk spinning gland. |
| serra | (Lat.) a serrated organ, structure, or edge. |
| seta | (Lat.) a bristle; any bristlelike organ. |
| setal | like a bristle. |
| setose | thickly set with bristles or bristly hairs. |
| setous | thickly set with bristles or bristly hairs. |
| setule | a small bristle. |
| setulose | having small bristles or setules. |
| setulous | having small bristles or setules. |
| siphonate | having a siphon or siphons. |
| snout | the projecting muzzle of an animal, esp a pig (verb) to provide with a snout |
| snoutish | like a snout. |
| snoutlike | like a snout. |
| snouty | resembling a beast's snout. |
| solidungulate | an animal with an uncloven hoof. |
| solidungulous | having a single hoof on each foot. |
| solipedous | having single hoofs. |
| soma | (Greek) the whole axial portion of an animal, including the head, neck, trunk, and tail. |
| somital | relating to a somite, the body segment of a vertebrate embryo. |
| somite | the body segment of a vertebrate embryo. |
| somitic | relating to a somite, the body segment of a vertebrate embryo. |
| soricident | having teeth like a shrew's. |
| spald | (Scots) the shoulder, esp of an animal used as food. |
| spalle | (Spenser) the shoulder, esp of an animal used as food. |
| spaul | (Scots) the shoulder, esp of an animal used as food. |
| squama | (Lat.) a scale. |
| squamate | like, having or covered with scales; (noun) a creature covered with scales. |
| squame | a scale. |
| squamosal | a paired membrane bone of the vertebrate skull, the squamous portion of the temporal bone. |
| squamose | like, having or covered with scales. |
| squamosely | (Adv.) SQUAMOSE, like, having or covered with scales. |
| squamous | like, having or covered with scales. |
| squamously | (Adv.) SQUAMOUS, like, having or covered with scales. |
| squamule | a little scale. |
| squamulose | covered with very small scales, as in snakes. |
| statocyst | an organ of balance in some invertebrates. |
| subcaudal | situated under, or on the ventral side of, the tail; as, the subcaudal bones. |
| subterminal | of a band or stripe, situated before the tip of the tail. |
| suctorial | designed for sucking or adhering. |
| surroyal | one of the terminal branches or divisions of the beam of the antler of the stag or other large deer. |
| suspensorial | of or like the suspensorium. |
| suspensorium | that which holds up a part, esp the arrangement joining the lower jaw to the cranium in vertebrates below mammals. |
| sweetbread | the thymus gland of a young animal. |
| syndactyl | with digits joined together; (noun) an animal with digits joined together. |
| syndactyly | the state of being syndactyl, with digits joined together. |
| syngnathous | of certain fish, having the jaws fused to form a tubular structure. |
| tagma | (Greek) any of the distinct regions of the body in arthropods. |
| tail | a hindmost part; (verb) to provide with a tail. |
| tailless | without a tail. |
| taillessly | (Adv.) TAILLESS, without a tail. |
| talant | (Spenser) talon. |
| talaunt | (Spenser) a talon. |
| tapetal | relating to the tapetum, a reflective layer of the choroid in the eyes of many animals. |
| tapetum | (Lat.) a reflective layer of the choroid in the eyes of many animals, causing them to shine in the dark. |
| teat | the small protuberance through which the mammalian young suck the milk. |
| teated | having teats. |
| tectorial | covering, eg a tectorial membrane. |
| tegument | the natural covering of an animal or plant body. |
| tegumental | of or like a tegument. |
| tegumentary | of or like a tegument. |
| teleostome | with membrane bones in the skull, jaws etc, as with any ordinary fish except skates and rays; (noun) a teleostome fish. |
| telson | (Greek) the last segment of the abdomen, or an appendage to it, in crustaceans and arachnids. |
| telsonic | relating to a telson, the last segment of the abdomen in many arthropods. |
| tentacle | an elongated, flexible appendage of some animals. |
| tentaculate | like a tentacle. |
| tentaculoid | like a tentacle. |
| tentaculum | a tentacle. |
| testaceous | having a hard shell; brick-red. |
| testudinal | like a tortoiseshell or testudo. |
| tetradactyl | a four-toed animal. |
| tetradactyly | the state of being a tetradactyl, a four-toed animal. |
| tetrapodous | having four feet. |
| tewel | a chimney; the rectum or anus of a horse. |
| thurl | the hip-joint in cattle. |
| tibiofibula | a bone esp in frogs and toads that is formed by a fusion of the tibia and fibula. |
| trematic | of the gill-slits. |
| trifid | cleft to the middle, or slightly beyond the middle, into three parts; three-cleft. |
| trilobal | having three lobes. |
| triploblastic | having an ectoderm, mesoderm, and endoderm, as in most animal groups other than coelenterates. |
| trotter | a foot, esp of a sheep or pig. |
| trunk | the main stem of a tree. |
| trunked | having a trunk. |
| tuberculate | bearing tubercles, knobbly projections or excrescences. |
| tuberculated | bearing tubercles, knobbly projections or excrescences. |
| tuberculately | (Adv.) TUBERCULATE, bearing knobbly projections or excrescences. |
| tunica | (Lat.) an enclosing membrane or layer of tissue. |
| tuskless | without tusks. |
| tusky | having tusks. |
| udder | a mammary gland. |
| uddered | having udders. |
| udderless | destitute or deprived of an udder. |
| uncus | (Lat.) a hook or hooklike process or structure. |
| uneyed | not having eyes. |
| ungual | of or bearing a claw, hoof, or talon. |
| unguiculate | having claws or nails; (noun) an animal having claws or nails. |
| unguiculated | clawed, clawlike. |
| unguis | (Lat.) a claw or nail. |
| ungula | (Lat.) a hoof, claw, or talon. |
| ungular | of or like an ungula, a hoof, claw, or talon. |
| ungulate | having hooves; (noun) a hoofed animal. |
| unguligrade | walking on hoofs. |
| urceolus | (Lat.) a pitcher-shaped sheath or structure, as the tube in which some rotifers live. |
| urochord | the central axis or cord in the tail of larval ascidians and of certain adult tunicates. |
| uromere | any one of the abdominal segments of an arthropod. |
| urosome | the abdomen, or post-abdomen, of arthropods. |
| urostege | (Greek) a snake's ventral tail-plate. |
| urostegite | a snake's ventral tail-plate. |
| urosthenic | having a tail designed for propulsion. |
| urostyle | a prolongation of the last vertebra in frogs, toads, etc. |
| varix | (Lat.) a varicose swelling; a ridge on the surface of eg a snail's shell. |
| vell | the fourth stomach of a calf, aka abomasum. |
| ventral | pertaining to the underside or the belly (noun) a ventral fin |
| ventrally | (Adv.) VENTRAL, pertaining to the underside or the belly. |
| vertebrated | having a backbone. |
| vestibulum | (Lat.) a cavity into which, in certain bryozoans, the esophagus and anus open. |
| vibrissa | (Lat.) a sensitive whisker on animal's face. |
| vibrissal | like a vibrissa, a sensitive whisker on an animal's face. |
| viperiform | shaped like a snake or viper. |
| webfoot | a foot the toes of which are connected by a membrane. |
| webfooted | having webbed feet. |
| xenarthral | having additional facets on the dorsolumbar vertebrae, like sloths, anteaters and armadillos. |
| xenophya | (Greek) elements of a shell or skeleton not secreted by the organism itself. |
| xiphiplastron | in chelonians, one of the plates forming the plastron, lying posterior to the hypoplastron. |
| zalambdodont | having molar teeth with V-shaped ridges, as some Insectivora do; (noun) an animal having such teeth. |
| zoecium | (Greek) the body wall or enclosing chamber of a polyzoan individual. |
| zooecium | (Greek) the body wall or enclosing chamber of a polyzoan individual. |
| zoonite | one of the segments of the body of an articulate animal. |
| zoonitic | like a zoonite, one of the segments of the body of an articulate animal. |
| zoothecial | of or like a zoothecium, the tubular sheath of certain infusorians. |
| zoothecium | the tubular sheath of certain infusorians. |
| zygantrum | (Greek) in snakes and some lizards, an additional vertebral articulation. |
| zygodont | relating to molar teeth whose cusps are paired. |
| zygosphene | a median process on the front part of the neural arch of the vertebrae of most snakes and some lizards, which fits into a fossa, called the zygantrum, on the back part of the arch in front. |