[ am-peer-ouuh r, -ou-er, am-peer- ]
/ ˈæm pɪərˈaʊər, -ˈaʊ ər, æmˈpɪər- /

noun Electricity.

a unit of electric charge noting the amount of electricity transferred by a current of one ampere in one hour, equal to 3600 coulombs. Abbreviation: Ah, amp-hr, amp. hr.

Origin of ampere-hour

First recorded in 1880–85 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ampere-hour

British Dictionary definitions for ampere-hour



a practical unit of quantity of electricity; the quantity that flows in one hour through a conductor carrying a current of 1 ampere. 1 ampere-hour is equivalent to 3600 coulombsAbbreviation: a.h.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012