2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Invertebrate \In*ver"te*brate\, adjective (Zool.) Destitute of a backbone; having no vertebr[ae]; of or pertaining to the Invertebrata. -- n. One of the Invertebrata.

{Age of invertebrates}. See {Age}, and {Silurian}.

From WordNet (r) 3.0 (2006) [wn]:



1: lacking a backbone or spinal column; "worms are an example of invertebrate animals" [syn: {invertebrate}, {spineless}] [ant: {vertebrate}]


1: any animal lacking a backbone or notochord; the term is not used as a scientific classification

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Monday, March 30, 2015 11:01:55 PM Coordinated Universal Time (UTC)