upsilon
英 [?p'sa?l?n; ju?p-; '?ps?l?n; 'ju?p-]
美 ['?ps?lɑn]
中文詞源
upsilon 希臘字母表的第20個字母來自希臘語u psilon, 即僅u音，比較epsilon.
英文詞源
- upsilon (n.)
- 20th letter of the Greek alphabet, 1640s, from Greek u psilon, literally "a mere (or bare) 'u;' " so called in later Greek in reference to its sound. The exact reason is variously explained, but it seems to have had something to do with distinguishing it from diphthongs.