a decimal unit of measurement of the metric system (based on meters and kilograms and seconds); "convert all the measurements to metric units"; "it is easier to work in metric" メートル法の10進法の測定単位（メートルとキログラムと秒に基づく）。
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【上位】 any division of quantity accepted as a standard of measurement or exchange; "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume" 測定基準または交換基準として認められた量の部門。
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