Dictionary![]() ![]() in•ver•te•bratePronunciation: (in-vûr'tu-brit, -brāt"), [key] —adj. 1. Zool. a. not vertebrate; without a backbone. b. of or pertaining to creatures without a backbone. 2. without strength of character. —n. 1. an invertebrate animal. 2. a person who lacks strength of character. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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