fifteenthadj.
英 fɪf'tiːnθ | 美 'fɪf'tinθ
中文adj. 第十五的；十五分之一的\nnum. 第十五
第十五的；十五分之一的
num. 第十五
词根词源
fifteenth (adj.)late 14c., from fifteen + -th (1). By 15c. displacing forms derived from Old English fifteoða. Compare Old Frisian fiftuda, Dutch vijftiende, German fünfzehnte, Old Norse fimmtandi, Gothic fimftataihunda, with ordinal -d where English has -th. As a noun by late 14c.
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