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In English and related languages, several terms involving the words "great" or "gross" (possibly, from (フランス語:grosse) thick) relate to numbers involving multiples of exponents of twelve (dozen): *A gross refers to a group of 144 items (a dozen dozen or a square dozen).〔〔 *A great gross refers to a group of 1728 items (a dozen gross or a cubic dozen).〔.〕〔.〕 *A small gross〔.〕 or a great hundred〔.〕 refers to a group of 120 items (ten dozen). A gross may be abbreviatied as "gr" or "gro". The continued use of these numbers in measurement and counting represents a continuation of the tradition of the duodecimal number system in everyday life〔.〕 and has encouraged groups such as the Duodecimal Society of America to advocate for a wider use of such a numbering system in place of decimal.〔.〕〔.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gross (unit)」の詳細全文を読む スポンサード リンク
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