/ Dictionary / Index E equi: Meaning and Definition of Find definitions for: e•qui Pronunciation: (ē'kwē, ek'wē), [key] — n. Ling. See equi- Pronunciation: [key] a combining form meaning “equal,” used in the formation of compound words: equimolecular. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. equestrienne equiangular Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language