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  1. acre-foot

    • IPA[ˈākər fo͝ot]
    • n.
      a unit of volume equal to the volume of a sheet of water one acre (0.405 hectare) in area and one foot (30.48 cm) in depth; 43,560 cubic feet (1233.5 cu m).
    • noun: acre-foot, plural noun: acre-feet