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acre-foot
[ ey-ker-foot ]
noun
- 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.
acre-foot
noun
- 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
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Word History and Origins
Origin of acre-foot1
An Americanism dating back to 1900–05
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