ampere-hour

[am-peer-ouuh r, -ou-er, am-peer-]
noun Electricity.
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ampere-hour

ampere-hour

noun
  1. 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.
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