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The volume of water, 43,560 cubic feet, that will cover an area of one acre to a depth of one foot.
n, pl -feet
(Units) the volume of water that would cover an area of 1 acre to a depth of 1 foot: equivalent to 43 560 cubic feet or 1233.5 cubic metres
a unit of volume of water in irrigation: the amount covering one acre to a depth of one foot, equal to 43,560 cubic feet (1233 cubic meters).
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|Noun||1.||acre-foot - the volume of water that would cover 1 acre to a depth of 1 foot; 43,560 cubic feet or 1233.5 cubic meters|