Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| abactinal | remote from the actinal area (of a radiate animal). |
| abactinally | (Adv.) ABACTINAL, pertaining to the surface or end opposite to the mouth in a radiate animal. |
| acoelomate | an animal that lacks a coelom, for example platyhelminths (flatworms). |
| actinal | pertaining to the part of a radiate animal which contains the mouth. |
| actinally | (Adv.) ACTINAL, pertaining to the part of a radiate animal which contains the mouth. |
| actiniform | having a radiate form, like a starfish. |
| ambulacral | of or pertaining to ambulacra; avenuelike; as, the ambulacral ossicles, plates, spines, and suckers of echinoderms. |
| ambulacrum | a radial band in the shell of an echinoderm, bearing rows of pores through which the tube-feet protrude. |
| amphistomous | having a sucker at either end, as some worms. |
| angiostomatous | narrow-mouthed; with a mouth that is not distensible. |
| angiostomous | narrow-mouthed; with a mouth that is not distensible. |
| antenna | (Lat.) either of a pair of sensory appendages on the heads of insects, crustaceans, and some other arthropods. |
| antennal | of or like antennae. |
| antennary | having antennae. |
| antenniferous | bearing antennae. |
| antennular | of or like an antennule. |
| antennule | one of a first or smaller pair of antennae in crustaceans. |
| antlia | (Lat.) the suctorial proboscis of certain insects. |
| antliate | having an antlia, the suctorial proboscis of certain insects. |
| arthromere | an arthropod body segment. |
| arthromeric | relating to an arthromere. |
| axonemal | relating to an axoneme, part of a cilium. |
| axoneme | a central strand of a locomotor organelle such as a cilium or flagellum. |
| bivalvate | of molluscs, having two valves. |
| bivium | (Lat.) in echinoderms, the two rays enclosing the madreporite. |
| bothrium | (Lat.) a groove on a tapeworm. |
| brachycerous | of insects, having short antennae. |
| cavitary | containing a body cavity; as, the cavitary or nematoid worms. |
| cephalothoracic | relating to the cephalothorax. |
| cephalothorax | the body, or head with thorax, of spiders, crustaceans, etc. |
| cephalous | having a head. |
| cercus | (Lat.) a sensory appendage of an insect. |
| cervicum | the flexible region between the head and prothorax in insects. |
| chaeta | (Lat.) a bristle or seta of seaworms. |
| chaetal | relating to a chaeta, a bristle or seta of seaworms. |
| chelicera | the first pair of appendages of a chelicerate arthropod. |
| cheliceral | relating to the chelicerae. |
| cheliferous | bearing pincers or claws. |
| cheliform | shaped like a chela or pincer. |
| cheliped | one of the pair of legs carrying the chelae (claws) in arthropods. |
| chitin | a substance consisting of polysaccharide which forms most of the hard outer skeletons of arthropods and of the cell-walls of fungi. |
| chitinoid | of or like chitin. |
| chitinous | of or like chitin. |
| chrysalid | a pupa, esp of a moth or butterfly, enclosed in a firm case or cocoon. |
| chrysalidal | like a chrysalid. |
| chrysalis | a pupa, esp of a moth or butterfly, enclosed in a firm case or cocoon. |
| ciliation | the state of having cilia, hairlike lashes borne by a cell. |
| clitellar | relating to the clitellum. |
| clitellum | (Lat.) in annelids, a swelling of the body towards the head of the animal, where the gonads are located. |
| clypeal | relating to the clypeus, the frontal plate of the head of an insect. |
| clypeus | (Lat.) the frontal plate of the head of an insect. |
| cnidoblast | a stinging thread cell containing a nematocyst. |
| coelenteron | a coelenterate's saclike body cavity. |
| coelomate | having a coelom; (noun) an animal having a coelom. |
| coenosarc | the common soft tissue which unites the polyps of a compound hydroid. |
| colleterial | as in colleterial gland, a glue-secreting organ found in insects. |
| conchiolin | a fibrous protein substance that forms the basic structure of the shell of molluscs. |
| connivent | of insect or plant parts, converging and touching, but not united or fused. |
| connivently | (Adv.) CONNIVENT, converging and touching, but not united or fused. |
| corbicula | (Lat.) the pollen basket of bees, consisting of the dilated posterior tibia with its fringe of long hairs. |
| cornicle | a wax-secreting organ on an aphid's abdomen. |
| corniculum | (Lat.) a small hornlike part or process. |
| coxa | (Lat.) the first joint of the leg of an insect or crustacean. |
| coxal | relating to the coxa, the first joint of the leg of an insect or crustacean. |
| cribellar | relating to a cribellum, a sievelike spinning organ of certain spiders. |
| cribellum | (Lat.) a sievelike spinning organ of certain spiders. |
| ctene | (Greek) a comblike swimming organ in the Ctenophora. |
| ctenidium | (Lat.) a comblike respiratory gill of molluscs. |
| cuticula | (Lat.) the outer hard covering of an insect. |
| dactylus | (Lat.) the leg joint of certain insects. |
| dealate | divested of its wings; (noun) an animal divested wings. |
| dealated | of an insect, divested of its wings. |
| dermatome | the lateral wall of a somite from which the dermis is produced. |
| dermatomic | relating to a dermatome, the lateral wall of a somite from which the dermis is produced. |
| diact | having two rays; (noun) a sponge spicule having two rays that develop in different directions from a single point of origin. |
| diactinal | having two rays. |
| diactine | having two rays; (noun) a sponge spicule having two rays that develop in different directions from a single point of origin. |
| dioptrate | of insects, having the compound eye divided transversely. |
| diploblastic | having ectoderm and endoderm but no mesoderm, as in coelenterates. |
| dipnoous | having both lungs and gills. |
| dipteral | having two wings only; belonging to the order Diptera. |
| dipterous | having two wings, as certain insects; belonging to the order Diptera. |
| dorsibranchiate | having gills on the back. |
| edriophthalmian | of crustaceans, with stalkless eyes. |
| edriophthalmic | of crustaceans, with stalkless eyes. |
| edriophthalmous | of crustaceans, with stalkless eyes. |
| elytral | relating to the elytrum, a beetle's wing-case. |
| elytriform | having the form, or structure, of an elytron. |
| elytrigerous | bearing elytra. |
| elytroid | of or like an elytron, a beetle's forewing. |
| elytron | (Greek) each of the horny forewings of a coleopterous insect, which form protective sheaths for the hindwings. |
| elytrous | of or like an elytron, a beetle's forewing. |
| elytrum | (Lat.) each of the horny forewings of a coleopterous insect, which form protective sheaths for the hindwings. |
| encephalous | having a head. |
| endopod | a branch of a crustacean limb. |
| endopodite | the internal or principal branch of the locomotive appendages of Crustacea. |
| endostyle | a fold of the endoderm, which projects into the blood cavity of ascidians. |
| enteron | (Greek) a body cavity in coelenterates. |
| epicuticle | the outermost layer of cuticle of an insect exoskeleton. |
| epicuticular | relating to the epicuticle. |
| epiphragm | the disc with which certain molluscs close the aperture of their shell. |
| epistome | the region between the antennae and the mouth, in Crustacea. |
| equivalve | having valves of similar size and form. |
| exarate | of a pupa, having the appendages free from the body. |
| exocuticle | the middle layer of an insect's cuticle. |
| exopod | the outer branch of a crustacean limb. |
| exopodite | the outer branch of a crustacean limb. |
| exopoditic | of or like an exopodite, the outer branch of a crustacean limb. |
| exoskeletal | relating to an exoskeleton. |
| exoskeleton | an external skeleton. |
| eyestalk | one of the movable peduncles which, in the decapod Crustacea, bear the eyes at the tip. |
| fenestra | (Lat.) a translucent spot eg on an insect's wing. |
| flagellar | of or relating to a flagellum, a whip, a whiplike organ. |
| flagellum | (Lat.) a whip, a whiplike organ. |
| frenular | of or relating to a frenulum, a small stiff hair on the hindwings of some insects. |
| frenulum | (Lat.) a small stiff hair on the hindwings of some insects, serving to bond hind and front wings. |
| frustule | the siliceous two-valved shell of a diatom. |
| funicle | any of certain filamentary anatomical structures, eg a section of an insect's antenna. |
| furca | any forklike structure esp in insects. |
| gladius | (Lat.) the internal shell, or pen, of cephalopods. |
| gnathite | in arthropods, an appendage used as a jaw. |
| gonopod | either of a pair of appendages that are the external reproductive organs of insects. |
| gonopore | a genital pore in insects and some invertebrates. |
| haemocoel | the central body cavity of many invertebrates. |
| haemolymph | the blood-like fluid of invertebrates. |
| haltere | (Greek) the rudimentary hindwing of a fly. |
| haustellum | the sucking organ or proboscis of an insect or crustacean. |
| hectocotylus | a tentacle in certain male cephalopod molluscs, such as the octopus, that is specialized for transferring spermatozoa to the female. |
| hemelytral | relating to the hemelytron, the insect forewing. |
| hemelytron | an insect forewing thickened at the base, membranous at the apex. |
| hemelytrum | an insect forewing thickened at the base, membranous at the apex. |
| hemerythrin | an iron-containing respiratory pigment in the blood of various chiefly marine invertebrates. |
| hemielytral | relating to the hemielytron, the insect forewing. |
| hemielytron | the forewing of plant bugs and related insects, having a thickened base and a membranous apex. |
| hemocoel | the central body cavity of many invertebrates. |
| hemolymph | the circulatory fluid of various invertebrate animals. |
| hepatopancreas | a glandular structure (as of a crustacean) that combines the digestive functions of the vertebrate liver and pancreas. |
| hexactinal | having six rays. |
| hindwing | the rear wing of eg an insect. |
| holoptic | of an insect, having the eyes meeting at the midline. |
| homeomery | the state of being homoeomeric, having all the somites alike. |
| homoeomeric | having all the somites alike. |
| homoeomery | the state of being homoeomeric, having all the somites alike. |
| hypopharynx | an appendage or thickened fold on the floor of the mouth of many insects that resembles a tongue. |
| hypostome | any of several structures associated with the mouth in different invertebrates. |
| implex | (Lat.) in arthropods, an in-turning of the integument where muscles are attached. |
| incurrent | carrying an inflowing current. |
| indusial | of or like an indusium, the protective cover of insect's wing. |
| indusiate | having an indusium, a protective covering. |
| indusium | the protective cover of an insect's wing. |
| inequivalve | having the valves of the shell of a mollusk unequal in size. |
| inequivalved | having the valves of the shell of a mollusk unequal in size. |
| interambulacral | of or like an interambulacrum. |
| interambulacrum | in sea urchins, a radial band between ambulacra. |
| interramal | between rami or branches; esp between the mandibles, or rami of the lower jaw. |
| invertebral | invertebrate. |
| ligula | (Lat.) a tonguelike part or organ; the anterior part of an insect's labium or lower lip. |
| limacel | (Lat.) a slug's reduced, usually embedded, shell. |
| loma | (Lat.) a membranous fringe or flap in the southwestern US, a hill with a broad flat top |
| lophophorate | of or like a lophophore, a ring of ciliated tentacles round the mouth of some sedentary marine animals. |
| lophophore | a ring of ciliated tentacles round the mouth of some sedentary marine animals. |
| madreporite | in echinoderms, a perforated plate serving as opening to the stone canal. |
| madreporitic | of or like madreporite, in echinoderms, a perforated plate serving as opening to the stone canal. |
| maxilliped | one of the mouth appendages of Crustacea, situated next behind the maxillae. |
| maxillipedary | like a maxilliped, one of the mouth appendages of Crustacea. |
| maxillipede | one of the mouth appendages of Crustacea, situated next behind the maxillae. |
| maxillula | in crustaceans, a maxilla of the first pair. |
| meroistic | applied to the ovaries of insects when they secrete vitelligenous cells, as well as ova. |
| mesoglea | a gelatinous layer between the endoderm and ectoderm of a coelenterate. |
| mesogleal | relating to the mesoglea. |
| mesogloea | a gelatinous layer between the endoderm and ectoderm of a coelenterate. |
| mesothorax | the middle segment of the thorax in insects. |
| metameral | relating to a metamere, a serial division or segmentation of a body. |
| metamere | one of the similar body segments into which earthworms, crayfish, and similar animals are divided longitudinally. |
| metasoma | the posterior part of an arachnid's abdomen. |
| metathoracic | relating to the metathorax. |
| metathorax | the last or posterior segment of the thorax in insects. |
| microtube | a very small tube, as found in an axoneme. |
| monact | the spicule of a sponge that has a single-spiked structure. |
| monactinal | of a sponge, having single-rayed spicules. |
| monactine | the spicule of a sponge that has a single-spiked structure. |
| monothalamous | of an animal or protist, having a shell, test, or skeleton with a single chamber. |
| myotome | a segment of the body formed by a region of muscle. |
| nematoblast | a stinging thread cell containing a nematocyst, aka cnidoblast. |
| nematocyst | an older name for a cnidoblast, a stinging cell in eg jellyfish. |
| nematocystic | of or like a nematocyst, a stinging cell in eg a jellyfish. |
| nephridial | of or pertaining to a nephridium, a segmental tubule. |
| nephridium | in invertebrates and lower chordates, an organ serving the function of a kidney. |
| notal | pertaining to the notum, the dorsal aspect of the thorax in insects. |
| notum | (Lat.) the dorsal aspect of the thorax in insects. |
| obtect | of an insect, having wings and legs immovably pressed against the body in a hard chitinous case. |
| obtected | of an insect, having wings and legs immovably pressed against the body in a hard chitinous case. |
| ocellar | of the nature of an ocellus, a small simple eye found in many invertebrates. |
| ocellus | (Lat.) a small simple eye found in many invertebrates; an eyelike marking. |
| octamerous | having eight parts or organs. |
| odontophoral | of or like an odontophore, the rasping apparatus in molluscs. |
| odontophoran | of or like an odontophore, the rasping apparatus in molluscs; (noun) an odontophore. |
| odontophore | the rasping apparatus in molluscs. |
| odontophorous | of or like an odontophore, the rasping apparatus in molluscs. |
| ommateum | (Lat.) a compound eye. |
| ommatidial | relating to an ommatidium. |
| ommatidium | a simple element of a compound eye. |
| ommatophore | an eyestalk, as in snails. |
| ommatophorous | of or like ommatophore, an eyestalk, as in snails. |
| onycha | (Greek) an ingredient in ancient Jewish incense; the nail-like operculum of a mollusc. |
| onychium | a pulvillus (a minute cushion on the feet) in insects. |
| oocyst | an encysted form of some sporozoan zygotes. |
| oothecal | pertaining to an ootheca, the firm-walled egg-case of some molluscs and insects. |
| opercular | belonging to the operculum; (noun) the opercular bone. |
| operculate | relating to the operculum. |
| operculated | relating to the operculum. |
| opercule | an anatomical part that serves as a lid or cover. |
| operculum | (Lat.) an anatomical part that serves as a lid or cover. |
| opisthosoma | the abdomen of a spider or other arachnid. |
| osculum | (Lat.) the excretory organ of a sponge. |
| osmeterium | a forked process behind the head of certain caterpillars, giving out a foul smell. |
| otocystic | relating to an otocyst, an auditory cyst or vesicle. |
| ovariole | one of the egg-tubes forming an insect's ovary. |
| ovipositor | the organ with which many insects and some other animals deposit their eggs. |
| pallial | of or pertaining to the pallium or mantle of a mollusc. |
| palp | a sense organ attached to mouthparts of certain insects and crustacea; (verb) to sense by touch. |
| palpal | relating to a palp, an elongated sense organ, usually near mouth, in insects, mollusks, crustaceans. |
| palpus | (Lat.) a sense organ attached to mouthparts of certain insects and crustacea. |
| paraglossa | one of a pair of small appendages of the lingua or labium of certain insects. |
| paraglossal | relating to the paraglossae, small appendages of the lingua or labium of certain insects. |
| paraglossate | relating to the paraglossae, small appendages of the lingua or labium of certain insects. |
| paragnathism | having equal mandibles. |
| paragnathous | having equal mandibles. |
| parapodial | relating to a parapodium, one of the lateral appendages of an annelid. |
| parapodium | a jointless muscular lateral appendage occurring in pairs in polychaete worms. |
| pedicellaria | each of numerous organs like small pincers on the outside of an echinoderm. |
| pedipalp | one of the second pair of appendages of an arachnoid. |
| pedipalpus | one of the second pair of appendages of an arachnoid. |
| pentact | a five-rayed sponge spicule. |
| pentactinal | relating to a pentact. |
| peraeon | (Greek) the thorax of some crustaceans. |
| peraeopod | each of the eight walking limbs of a crustacean such as a crab or lobster, growing from the thorax. |
| pereion | (Greek) the thorax of some crustaceans. |
| pereiopod | each of the eight walking limbs of a crustacean such as a crab or lobster, growing from the thorax. |
| pereon | the thorax of some crustaceans. |
| pereopod | each of the eight walking limbs of a crustacean such as a crab or lobster, growing from the thorax. |
| periostracum | the horny outer layer of a mollusc's shell. |
| periplast | an intercellular substance; the ectoplasm of flagellates. |
| periproct | the region surrounding the anus, particularly of echinoderms. |
| perisarc | the outer, hardened integument which covers most hydroids. |
| perisarcal | relating to the perisarc, the outer, hardened integument which covers most hydroids. |
| perisarcous | relating to the perisarc, the outer, hardened integument which covers most hydroids. |
| perradial | situated around the radii, or radial tubes, of a radiate. |
| perradius | the primary radius of a coelenterate. |
| pleonal | relating to the pleon, the abdomen of crustaceans. |
| pleonic | relating to the pleon, the abdomen of crustaceans. |
| pleuron | (Greek) an external, lateral body part of arthropods. |
| podite | a walking leg of a crustacean. |
| poditic | relating to a podite, a walking leg of a crustacean. |
| podomere | a walking leg of a crustacean, a podite. |
| poiser | the balancer of dipterous insects. |
| polyact | of a marine animal, having many rays or tentacles. |
| polyactinal | of a marine animal, having many rays or tentacles. |
| polyactine | of a marine animal, having many rays or tentacles; (noun) the spicule of a polyactinal sponge. |
| polypodous | having many legs or similar appendages. |
| preocular | placed just in front of the eyes, as the antennae of certain insects; (noun) a scale in front of the eye of a reptile or fish. |
| prepupal | relating to the stage before the pupa. |
| prescutum | (Lat.) the first of the four pieces composing the dorsal part, or tergum, of a thoracic segment of an insect. |
| presternum | the anterior segment of the sternum. |
| proboscis | an elongated organ, usually associated with the mouth. |
| proctodaeal | relating to the proctodaeum, the posterior portion of the alimentary canal, esp in insects and embryos. |
| proglottic | relating to the proglottis. |
| proglottid | a segment of a tapeworm. |
| proglottidean | of or like a proglottis, a segment of a tapeworm. |
| proglottis | a segment of a tapeworm. |
| proleg | an insect larva's abdominal leg. |
| promuscidate | like or having a promuscis. |
| promuscis | a proboscis, esp an insect's. |
| pronotal | relating to a pronotum, the back of an insect's prothorax. |
| pronotum | the back of an insect's prothorax. |
| propodeon | in some Hymenoptera, the first abdominal segment. |
| propodeum | in some Hymenoptera, the first abdominal segment. |
| prosternum | the sternum of the prothorax of insects. |
| prostomial | relating to the prostomium, that portion of the head of an annelid situated in front of the mouth. |
| prostomium | that portion of the head of an annelid situated in front of the mouth. |
| prothorax | the first or anterior segment of the thorax in insects. |
| protopod | a part of a crustacean appendage. |
| pseudimago | a stage in the development of certain insects, such as the May flies, intermediate between the pupa and imago. |
| pterin | (Greek) any of a group of substances occurring in butterfly wings. |
| pulmobranch | a lung-book. |
| pulmobranchiate | relating to a pulmobranch, a lung-book. |
| pulvillus | (Lat.) one of the minute cushions on the feet of certain insects. |
| pupa | (Lat.) an insect in the usually passive stage between larva and imago. |
| pupal | of or pertaining to a pupa, or the condition of a pupa. |
| puparial | relating to a puparium, the last larval skin of the pupa. |
| puparium | (Lat.) the last larval skin of the pupa. |
| pupigerous | bearing a puparium. |
| pupiparous | bearing, or containing, a pupa. |
| pygidial | of or like a pygidium, the posterior division of the body in trilobites. |
| pygidium | in trilobites, the posterior division of the body, formed by fusion of the telson with one or more posterior pleurae. |
| pyrenoid | a transparent body found in the chromatophores of certain Infusoria. |
| radula | (Lat.) a mollusc's tongue, that is studded with tiny teeth. |
| rayless | without rays. |
| raylessly | (Adv.) RAYLESS, without rays. |
| resilin | an elastic substance in the cuticles of many insects. |
| retinular | relating to the retinula, a pigmented cell in some arthropod compound eyes, from which the rhabdom arises. |
| rhabdoid | a rodlike body. |
| rhabdolith | a calcareous rod in some Protozoa. |
| rhabdom | (Greek) a fourfold rod in the compound eye of an arthropod. |
| rhabdomal | of or like a rhabdom, a fourfold rod in the compound eye of an arthropod. |
| rhabdome | (Greek) a fourfold rod in the compound eye of an arthropod. |
| rhabdomere | one of the several parts composing a rhabdom. |
| rhabdus | (Greek) a rodlike sponge spicule. |
| rhynchocoel | the cavity in which the proboscis of a nemertine lies. |
| ringent | having gaping liplike parts such as the shells of certain bivalves. |
| sclere | a sponge spicule. |
| sclerotisation | the cross-linking of chitin protein molecules to harden an insect's shell. |
| scolecoid | like a scolex, the head of a tapeworm. |
| scolex | (Greek) the head of a tapeworm. |
| scopula | (Lat.) a brushlike tuft of hairs on legs of some spiders. |
| scopulate | like a scopula, a little tuft of hairs. |
| scrobe | a groove eg for the reception or concealment of a limb or other appendage of an insect. |
| scrobicular | relating to or surrounded by scrobicules. |
| scrobicule | a small pit or depression, as around the tubercles of a sea urchin. |
| serricorn | having serrated antennae; (noun) a beetle with serrate antennae. |
| shard | a piece of broken pottery; a beetle's elytrum or wing-case. |
| sharded | (Arch.) sheltered under dung. |
| sinupallial | of certain bivalve molluscs, having an indented pallial line for the retraction and expansion of the pallial siphons. |
| sinupalliate | of certain bivalve molluscs, having an indented pallial line for the retraction and expansion of the pallial siphons. |
| siphonet | an aphid's honeydew tube. |
| siphuncle | the tube which runs through the partitions of chambered cephalopod shells. |
| spermatheca | a receptacle for storing spermatazoa in insects. |
| spermathecal | of or like a spermatheca, a receptacle for storing spermatazoa in insects. |
| sphaeridium | a minute spheroidal body on the surface of a sea urchin, perhaps a sense organ. |
| spicula | (Lat.) a spike or splinter. |
| spiculum | (Lat.) a little spine; a snail's dart. |
| spinneret | the silk-spinning organ of an insect or spider. |
| spinnerette | the silk-spinning organ of an insect or spider. |
| spinnerule | one of the numerous small spinning tubes on the spinnerets of spiders. |
| spiracle | a breathing hole in eg insects. |
| spiracular | of or pertaining to a spiracle. |
| spiraculum | a breathing-hole; a vent, orifice. |
| spiraster | a coiled sponge spicule with radiating spines. |
| sternite | the sternum of an arthropod somite. |
| sternitic | relating to the sternite, the sternum of an arthropod somite. |
| subcosta | the subcostal nervure or vein of an insect's wing. |
| subimago | a stage in the development of certain insects, such as mayflies, intermediate between the pupa and imago. |
| submentum | the basal part of the labium of insects. |
| subumbrella | the concave undersurface of a jellyfish. |
| subumbrellar | relating to the subumbrella, the concave undersurface of a jellyfish. |
| swimmeret | a crustacean's abdominal appendage used in swimming. |
| tailfan | a fanlike swimming organ at the end of some crustaceans. |
| tentacled | having tentacles. |
| tentacular | of or pertaining to a tentacle or tentacles. |
| terebrant | boring, having a piercing ovipositor; (noun, facetious) a bore. |
| tergal | relating to the tergum, an insect's upper or dorsal surface, esp of a body segment. |
| tergite | the back plate of a somite. |
| tergum | (Lat.) an insect's upper or dorsal surface, esp of a body segment. |
| tetract tetractinal tetractine | a four-rayed sponge spicule. |
| thoracal | relating to the thorax. |
| thorax | (Lat.) in insects, the second body region, between the head and abdomen, where the legs and wings are attached. |
| torulus | (Lat.) the socket of an insect's antenna. |
| tracheolar | of or like a tracheole, one of the minute delicate endings of a branched trachea of an insect. |
| tracheole | one of the minute delicate endings of a branched trachea of an insect. |
| triact | three-rayed; (noun) a three-rayed sponge spicule. |
| triactinal | three-rayed. |
| triactine | three-rayed. |
| triaxial | having three axes; (noun) a triaxial sponge spicule. |
| triradial | three-rayed. |
| triradiate | three-rayed. |
| triradiately | (Adv.) TRIRADIATE, three-rayed. |
| trivalved | having three valves. |
| trophi | (Lat.) the mouthparts of an insect. |
| tylote | a cylindrical sponge spicule. |
| typhlosole | a fold of the wall which projects into the cavity of the intestine in bivalve mollusks, certain annelids, starfishes, and some other animals. |
| uncinal | relating to an uncinus, a hooklet, a marginal tooth of a mollusc's radula. |
| uncinus | (Lat.) a hooklet, a marginal tooth of a mollusc's radula. |
| uniramose | esp. of the appendages of crustaceans, consisting of a single branch. |
| uniramous | esp. of the appendages of crustaceans, consisting of a single branch. |
| urite | an abdominal segment in insects. |
| uropod | any one of the abdominal appendages of a crustacean, esp one of the posterior ones. |
| uropodal | of or pertaining to a uropod, any one of the abdominal appendages of a crustacean. |
| uropodous | of or pertaining to a uropod, any one of the abdominal appendages of a crustacean. |
| zoaea | a larval stage in certain crustaceans. |
| zoea | (Lat.) a larval stage in certain crustaceans, esp decapods. |
| zoeal | pertaining to a zoea, a larval stage in certain crustaceans. |
| zoeform | like a zoea, the larval stage of certain crustaceans. |
| zoocytium | (Greek) a zoothecium, the tubular sheath of certain social infusorians. |
| zoodendrium | the branched stalk connecting the members of the colony in certain colonial Infusoria. |
| zooea | (Lat.) a larval stage in certain crustaceans, esp decapods. |
| zooeal | of or like a zooea, a larval stage in certain crustaceans. |
| zygocardiac | denoting certain paired lateral ossicles in the gastric mill of Crustacea. |