invertebrate
English Thesaurus
1. any animal lacking a backbone or notochord; the term is not used as a scientific classification (noun.animal)
| hyponym | : | arthropod, |
| definition | : | invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin (noun.animal) |
| hyponym | : | zoophyte, |
| definition | : | any of various invertebrate animals resembling a plant such as a sea anemone or coral or sponge (noun.animal) |
| hyponym | : | parazoan, poriferan, sponge, |
| definition | : | primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies (noun.animal) |
| hyponym | : | cnidarian, coelenterate, |
| definition | : | radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms (noun.animal) |
| hyponym | : | comb jelly, ctenophore, |
| definition | : | biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb (noun.animal) |
| hyponym | : | worm, |
| definition | : | any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae (noun.animal) |
| hyponym | : | borer, woodborer, |
| definition | : | any of various insects or larvae or mollusks that bore into wood (noun.animal) |
| hyponym | : | rotifer, |
| definition | : | minute aquatic multicellular organisms having a ciliated wheel-like organ for feeding and locomotion; constituents of freshwater plankton (noun.animal) |
| hyponym | : | mollusc, mollusk, shellfish, |
| definition | : | invertebrate having a soft unsegmented body usually enclosed in a shell (noun.animal) |
| hyponym | : | phoronid, |
| definition | : | hermaphrodite wormlike animal living in mud of the sea bottom (noun.animal) |
| hyponym | : | bryozoan, moss animal, polyzoan, sea mat, sea moss, |
| definition | : | sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding (noun.animal) |
| hyponym | : | ectoproct, |
| definition | : | sessile mossy aquatic animal having the anus of the polyp outside the crown of tentacles (noun.animal) |
| hyponym | : | entoproct, |
| definition | : | any of various moss-like aquatic animals usually forming branching colonies; each polyp having a both mouth and anus within a closed ring of tentacles (noun.animal) |
| hyponym | : | symbion pandora, |
| definition | : | only known species of Cycliophora; lives symbiotically attached to a lobster's lip by an adhesive disk and feeding by means of a hairy mouth ring; its complex life cycle includes asexual and sexual phases (noun.animal) |
| hyponym | : | brachiopod, lamp shell, lampshell, |
| definition | : | marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide (noun.animal) |
| hyponym | : | peanut worm, sipunculid, |
| definition | : | small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut (noun.animal) |
| hyponym | : | echinoderm, |
| definition | : | marine invertebrates with tube feet and five-part radially symmetrical bodies (noun.animal) |
| part holonym | : | foot, invertebrate foot, |
| definition | : | any of various organs of locomotion or attachment in invertebrates (noun.animal) |
| part holonym | : | peristome, |
| definition | : | region around the mouth in various invertebrates (noun.animal) |
| domain member category | : | exoskeleton, |
| definition | : | the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs (noun.body) |
2. lacking a backbone or spinal column (adj.all)
| antonym | : | vertebrate, |
| definition | : | having a backbone or spinal column (adj.all) |
| antonym | : | vertebrate, |
| definition | : | having a backbone or spinal column (adj.all) |
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