Breadcrumb Home > Dictionary > Index A acid anhydride: Meaning and Definition of Find definitions for: ac'id anhy'dride Pronunciation: [key] — Chem. Chem. See under(def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acid acidanthera ✖ Related Content Daily Word Quiz: derogate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language