upsilon
nounUK /ˈ(j)uːpsɪˌlɒn/ · US /ˈ(j)upsɪˌlɑn/
Etymology From Ancient Greek ὖ ψιλόν (û psilón, “simple Υ”).
1
The twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek.
- Derived terms
- upsilon particle
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.