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pennyweight n. 英國重量單位 英國重量單位 pennyweight n 1: a unit of apothecary weight equal to 24 grains Pennyweight \Pen"ny*weight`\, n. A troy weight containing twenty-four grains, or the twentieth part of a troy ounce; 1.555 grams; as, a pennyweight of gold or of arsenic. It is abbreviated dwt or pwt. It was anciently the weight of a silver penny, whence the name. [1913 Webster PJC] PENNYWEIGHT. A troy weight which weighs twenty-four grains, or one-twentieth
part of an ounce. Vide Weights.
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