Pronunciation: (am'pēr-ouur', -ou'ur, am-pēr'-), [key]
a unit of electric charge noting the amount of electricity transferred by a current of one ampere in one hour, equal to 3600 coulombs. Abbr.: Ah, amp-hr, amp. hr.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.