/ Dictionary / Index W WI: Meaning and Definition of Find definitions for: WI Pronunciation: [key] Wisconsin (approved esp. for use with zip code). wi Pronunciation: [key] — Stock Exchange. Stock Exchange. when-issued. W.I. Pronunciation: [key] West Indian. West Indies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: wi (Thesaurus) Whyte classification WIA Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language