Definitions for: Invertebrate

[n] any animal lacking a backbone or notochord; the term is not used as a scientific classification
[adj] (zoology) lacking a backbone or spinal column; "worms are an example of invertebrate animals"

Webster (1913) Definition: In*ver"te*brate, a. (Zo["o]l.)
Destitute of a backbone; having no vertebr[ae]; of or
pertaining to the Invertebrata. -- n. One of the

Age of invertebrates. See Age, and Silurian.

Antonyms: vertebrate

See Also: animal, animate being, arthropod, beast, borer, brachiopod, brute, bryozoan, cnidarian, coelenterate, comb jelly, creature, ctenophore, echinoderm, ectoproct, entoproct, fauna, foot, invertebrate foot, lamp shell, lampshell, mollusc, mollusk, moss animal, parazoan, peanut worm, peristome, phoronid, polyzoan, poriferan, rotifer, sea mat, sea moss, shellfish, sipunculid, sponge, Symbion pandora, woodborer, worm, zoophyte

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