/ Dictionary / Index C concavity: Meaning and Definition of Find definitions for: con•cav•i•ty Pronunciation: (kon-kav'i-tē), [key] — pl. -ties the state or quality of being concave. a concave surface or thing; cavity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: concavity (Thesaurus) concave concavo-concave Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language