upsilon
noun/ʌpˈsaɪlən/, /ˈʊpsɪlɒn/
/ˈʊpsɪlɑːn/
- the 20th letter of the Greek alphabet (ϒ, υ)Word OriginGreek, literally ‘slender U’, from psilos ‘slender’, referring to the need to distinguish upsilon from the diphthong oi: in late Greek the two had the same pronunciation.
Check pronunciation:
upsilon