/ Dictionary / Index B biconvex: Meaning and Definition of Find definitions for: bi•con•vex Pronunciation: (bī-kon'veks, bī"kon-veks'), [key] — adj. convex on both sides, as a lens. See diag. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: biconvex (Thesaurus) bicontinental bicorn Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language