invertebrate
| 1. |
(noun) any animal lacking a backbone or notochord; the term is not used as a scientific classification |
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Related Words: Symbion pandora, animal, animate being, arthropod, beast, borer, brachiopod, brute, bryozoan, cnidarian, coelenterate, comb jelly, creature, ctenophore, echinoderm, ectoproct, entoproct, fauna, lamp shell, lampshell, mollusc, mollusk, moss animal, parazoan, peanut worm, phoronid, polyzoan, poriferan, rotifer, sea mat, sea moss, shellfish, sipunculid, sponge, woodborer, worm, zoophyte |
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| 2. |
(adjective) (zoology) lacking a backbone or spinal column; "worms are an example of invertebrate animals" |
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Antonyms: vertebrate |
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