upsilon
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9.9
The 20th letter of the Greek alphabet written as Υ in uppercase and υ in lowercase
- noun
- /ˈʌp.sɪ.lɒn/
:
upsilon
Surface Forms
Etymology
Upsilon comes from Greek and names the 20th letter that later gave us the English letter Y. A helpful way to remember it is to think of a 'small U' or 'Y' sound and shape, which is why upsilon still refers to that Greek letter used in language and mathematics.