upsilon - meaning and definition. What is upsilon
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What (who) is upsilon - definition

TWENTIETH LETTER OF THE GREEK ALPHABET
Upsilon (letter); Υ; Ypsilon; Υψιλον; Ipsilon (letter); \upsilon; Ύψιλον; ϒ; ϓ; ϔ; Upsilon (Greek); Pythagorean letter; Upsilon (Greek letter); Üpsilon; Y (Greek); Hypsilon; Ipsilon (Greek)
  • 20px
  • [[Geoffroy Tory]] Ypsilon
  • The Greek alphabet on a [[black figure]] vessel, with a V-shaped upsilon
  • FreeSerif]] – one of the few typefaces that distinguish between the Latin and the Greek form

upsilon         
[?p's??l?n, ju:p-, '?ps?l?n, 'ju:p-]
¦ noun the twentieth letter of the Greek alphabet (?, ?), transliterated as 'u' or (chiefly in English words derived through Latin) as 'y'.
Origin
Gk, lit. 'slender U', from psilos 'slender', referring to the need to distinguish upsilon from the diphthong oi: in late Gk the two had the same pronunciation.
Upsilon         
·add. ·noun The 20th letter (/, /) of the Greek alphabet, a vowel having originally the sound of / as in room, becoming before the 4th century ·b.c. that French u or ·Ger. u. Its equivalent in English is u or y.
Upsilon Centauri         
WIKIMEDIA LIST ARTICLE
Υ Centauri; Upsilon Cen
The Bayer designation Upsilon Centauri (υ Cen / υ Centauri) is shared by two star systems, in the constellation Centaurus:

Wikipedia

Upsilon

Upsilon (, UK also ; uppercase Υ, lowercase υ; Greek: ύψιλον ýpsilon [ˈipsilon]) or ypsilon is the 20th letter of the Greek alphabet. In the system of Greek numerals, Υʹ has a value of 400. It is derived from the Phoenician waw .

Examples of use of upsilon
1. "I wouldn‘t say he‘s the most charismatic guy," says Tom Parker, the Psi Upsilon president the year Kean graduated and a friend who has helped with fundraising calls.
2. Beta Upsilon Chi is not allowed to join the off–campus Greek system of fraternities and sororities because the rules governing UF‘s Greek system bar religious discrimination, according to the lawsuit.
3. University officials have told Beta Upsilon Chi that it can‘t be registered on campus because only men are allowed to join, which amounts to prohibited sex discrimination, according to the lawsuit filed in U.S.
4. Matsakis makes some proposals of his own: that the letters «upsilon» and «eta» be dropped from the alphabet as they share the same phonetic value as «iota.» Simplifying the Greek language in this way «is necessary within the context of a trend toward unifying the languages of the European Union,» according to Matsakis. «Such a change would make Greek script more simple and practical,» he said.