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upsilon |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Upsilon \Up"si*lon\, n. [Gr. 'y^ psilo`n bare, mere, simple y.] The 20th letter ([Upsilon], [upsilon]) of the Greek alphabet, a vowel having originally the sound of [=oo] as in room becoming before the 4th century b. c. that French u or Ger. ["u]. Its equivalent in English is u or y. From WordNet r 1.6 [wn]: upsilon n : the 20th letter of the Greek alphabet
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