/ Dictionary / Index I invertebrate: Meaning and Definition of Find definitions for: in•ver•te•brate Pronunciation: (in-vûr'tu-brit, -brāt"), [key] — adj. not vertebrate; without a backbone. of or pertaining to creatures without a backbone. without strength of character. —n. an invertebrate animal. a person who lacks strength of character. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: invertebrate (Thesaurus) invertase inverted comma Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language