ALL meanings of upsilon
up·si·lon
U u - noun upsilon the 20th letter of the Greek alphabet (Υ, υ). 1
- noun upsilon the vowel sound represented by this letter. 1
- noun upsilon Also called upsilon particle. Physics. any of a family of heavy, short-lived, neutral mesons that are composed of a bottom quark and its antiquark. Symbol: Υ, υ. 1
- noun upsilon Greek letter 1
- noun upsilon the 20th letter in the Greek alphabet (Υ, υ), a vowel, transliterated as y or u 0
- noun upsilon the twentieth letter of the Greek alphabet (Y, υ) 0
- noun upsilon any of a group of short-lived elementary particles having a mass about ten times greater than that of a proton 0
- noun upsilon The twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek. 0