/ Dictionary / Index V versed sine: Meaning and Definition of Find definitions for: versed' sine' Pronunciation: [key] — Trig. Trig. one minus the cosine of a given angle or arc. Abbr.: vers. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. versed cosine verset Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language