Etymology

upsilon

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Today it means: The twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek. Full definition →

Ancient Greek ὖ ψιλόν
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The story

  1. Ancient Greek · derived fromὖ ψιλόν“simple Υ”
  2. English todayupsilon

From Ancient Greek ὖ ψιλόν (û psilón, “simple Υ”).

Etymology from Wiktionary, CC BY-SA 4.0.