The smallest unit of mass in the imperial system. It is 1/7000 of a common pound, which is equivalent to 1/5760 of a troy pound (64.79891 milligrams). Its origins lie in the ancient Orient, where it was based on a grain of barley. Grain means "grain of grain." There is also a unit called grain used for pearls, which is 0.77 common grains, which is equivalent to 49.90 milligrams. [Koizumi Kesakatsu and Imai Hidetaka] [Reference] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
ヤード・ポンド法の質量の最小単位。7000分の1常用ポンドで、5760分の1トロイポンド(64.79891ミリグラム)にあたる。起源は古代オリエントにおいて、オオムギの粒を基準にしたことに始まる。グレーンは「穀物の粒」の意味をもつ。ほかに真珠用としてもグレーンといわれる単位があり、これは0.77常用グレーン、49.90ミリグラムにあたる。 [小泉袈裟勝・今井秀孝] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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