noun
: a unit of weight of ore taken for assay equal to 29166 2/3 milligrams, the number of milligrams of precious metal in this amount of ore being equal to the number of troy ounces per 2000-pound ton
noun
: a unit of weight of ore taken for assay equal to 29166 2/3 milligrams, the number of milligrams of precious metal in this amount of ore being equal to the number of troy ounces per 2000-pound ton
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012