upsilon

🇬🇧/ʌpˈsaɪlən; ˈʊpsɪlɒn/ 🇺🇸/ˈʊpsɪlɑːn/ 10

the 20th letter in the Greek alphabet (Υ, υ), a vowel, transliterated as y or u ^{希腊字母表的第二十个字母，元音字母，译后写作"y"或"u"}

An example of this is the greek capital upsilon and the lowercase nu .^{这方面的一个例子是希腊首都埃普西隆和小写女。}