/ Dictionary / Index H horopter: Meaning and Definition of Find definitions for: ho•rop•ter Pronunciation: (hu-rop'tur, hô-), [key] — n. Ophthalm. a projection of the points in the visual field corresponding to the aggregate of points registering on the two retinas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. horology horoscope Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language