/ Dictionary / Index A amphoteric: Meaning and Definition of Find definitions for: am•pho•ter•ic Pronunciation: (am"fu-ter'ik), [key] — adj. Chem. capable of functioning either as an acid or as a base. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: amphoteric (Thesaurus) amphoriskos amphotericin Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language