/ Dictionary / Index H hippus: Meaning and Definition of Find definitions for: hip•pus Pronunciation: (hip'us), [key] — n. Med. spasmodic contraction of the pupil of the eye. -hippus Pronunciation: [key] var. ofas final element of compounds: eohippus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hippo Zarytus hippy Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language