/ Dictionary / Index H haversine: Meaning and Definition of Find definitions for: hav•er•sine Pronunciation: (hav'ur-sīn"), [key] — n. Trigonom. one half the versed sine of a given angle or arc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Haversian system Havilah Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language