/ Dictionary / Index A amp-hr: Meaning and Definition of Find definitions for: amp-hr Pronunciation: [key] ampere-hour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. amphotericin ampicillin Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language