seventhWiktionary 原文英/ˈsɛvnθ/美/ˈsɛvənθ/num.第七，七分之一中文释义来自 ECDICT构词拆解sevenseven词干th-th后缀-th(no longer productive) forms nouns from verbs of action · (no longer productive except in some informal words) forms nouns of quality from adjectives词源链原始日耳曼语Proto-Germanic约前 500–公元 200 年*sebundô↓ 继承原始西日耳曼语Proto-West Germanic*sebundō↓ 继承古英语Old English约 450–1150 年seofoþa↓ 继承中古英语词源说明From Middle English seventhe, sefte, from Old English seofoþa, from Proto-West Germanic *sebundō, from Proto-Germanic *sebundô. The -n-, lost in northern Proto-West Germanic, was later reinserted by analogy with seven, equivalent to seven + -th.释义形容词adjective1The ordinal form of the number seven.名词noun1The person or thing in the seventh position.2One of seven equal parts of a whole.3(music) A tone of the seventh degree from a given tone, the interval between two such tones, or the two tones sounding in unison.同族词派生词 18seventhly·