/ Dictionary / Index A AIChE: Meaning and Definition of Find definitions for: AIChE Pronunciation: [key] American Institute of Chemical Engineers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. A.I.C. aid Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language