em quad
名词 n.
英文释义
名词 n.
- A quad which has a fixed width of 1 em.
词形变化
词源
Attested in 1841.
From 1808 em quadrat, from 1683 m quadrat, from m + quadrat, a metal type, which is as wide as the point size of the font. The origin of the letter m is unclear; perhaps because the type body of the letter M was approximately square during the early days of typesetting, and to contrast it with the n quadrat, the letter n being approximately half as wide.
From 1808 em quadrat, from 1683 m quadrat, from m + quadrat, a metal type, which is as wide as the point size of the font. The origin of the letter m is unclear; perhaps because the type body of the letter M was approximately square during the early days of typesetting, and to contrast it with the n quadrat, the letter n being approximately half as wide.
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数据来源: Wiktionary