Definitions for upsilonˈyup səˌlɒn, -lən, ˈʌp-; esp. Brit. yupˈsaɪ lən
This page provides all possible meanings and translations of the word upsilon
Random House Webster's College Dictionary
up•si•lonˈyup səˌlɒn, -lən, ˈʌp-; esp. Brit. yupˈsaɪ lən(n.)
the 20th letter of the Greek alphabet (Y, υ).
Also called up′silon par`ticle. any of a family of heavy, short-lived, neutral mesons that are composed of a bottom quark and its antiquark. Symbol:Y, υ
Origin of upsilon:
1615–25; < LGk ŷ psīlón lit., simple u (to distinguish it from the diagraph oi, pronounced the same in LGk
the 20th letter of the Greek alphabet
The twentieth letter of the Classical and Modern Greek, the twenty-first letter of Old and Ancient.
Upsilon is the 20th letter of the Greek alphabet. In the system of Greek numerals it has a value of 400. It is derived from the Phoenician waw . The name of the letter is pronounced in Modern Greek, and in English, yewp-SY-lən, or YEWP-sə-lon. It is occasionally called "ypsilon" in English after its rendering in Latin, where the Greek upsilon corresponded with the letter Y.
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