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acre-inch

American  
[ey-ker-inch] / ˈeɪ kərˈɪntʃ /

noun

  1. one-twelfth of an acre-foot, equal to 3,630 cubic feet.


acre-inch British  

noun

  1. the volume of water that would cover an area of 1 acre to a depth of 1 inch; one twelfth of an acre-foot: equivalent to 3630 cubic feet or 102.8 cubic metres

"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

Etymology

Origin of acre-inch

An Americanism dating back to 1905–10