This article is about the Greek upsilon. For the Latin upsilon, see ʊ. For other uses, see Upsilon (disambiguation).
"Ypsilon" redirects here. For other uses, see Ypsilon (disambiguation).
Greek alphabet
Αα
Alpha
Νν
Nu
Ββ
Beta
Ξξ
Xi
Γγ
Gamma
Οο
Omicron
Δδ
Delta
Ππ
Pi
Εε
Epsilon
Ρρ
Rho
Ζζ
Zeta
Σσς
Sigma
Ηη
Eta
Ττ
Tau
Θθ
Theta
Υυ
Upsilon
Ιι
Iota
Φφ
Phi
Κκ
Kappa
Χχ
Chi
Λλ
Lambda
Ψψ
Psi
Μμ
Mu
Ωω
Omega
History
Archaic local variants
Ϝ
Ͱ
Ϻ
Ϙ
Ͳ
Ͷ
tsan
digamma
Diacritics
Ligatures
Numerals
ϛ (6)
ϟ (90)
ϡ (900)
Use in other languages
Bactrian
Coptic
Albanian
Related topics
Use as scientific symbols
Category
v
t
e
Upsilon (US: /ˈʌpsɪˌlɒn,ˈ(j)uːp-,-lən/, UK: /(j)uːpˈsaɪlən,ʊp-,-lɒn/;[1][2][3][4][5][6] uppercase Υ, lowercase υ; Greek: ύψιλονýpsilon[ˈipsilon]) or ypsilon/ɪp-/[1] is the twentieth letter of the Greek alphabet. In the system of Greek numerals, Υʹ has a value of 400. It is derived from the Phoenician waw .
The Greek alphabet on a black figure vessel, with a V-shaped upsilon
^ ab"upsilon". Chambers Dictionary (9th ed.). Chambers. 2003. ISBN 0-550-10105-5.
^"upsilon". Collins English Dictionary (13th ed.). HarperCollins. 2018. ISBN 978-0-008-28437-4.
Delta Upsilon (ΔΥ), commonly known as DU, is a collegiate men's fraternity founded on November 4, 1834, at Williams College in Williamstown, Massachusetts...
Upsilon Andromedae (υ Andromedae, abbreviated Upsilon And, υ And) is a binary star located 44 light-years from Earth in the constellation of Andromeda...
The Upsilon meson ( ϒ ) is a quarkonium state (i.e. flavourless meson) formed from a bottom quark and its antiparticle. It was discovered by the E288...
Psi Upsilon (ΨΥ), commonly known as Psi U, is a North American fraternity, founded at Union College on November 24, 1833. The fraternity reports 50 chapters...
Chi Upsilon Sigma is a Latin-based Greek letter intercollegiate sorority. Following is a list of Chi Upsilon Sigma chapters. The following list includes...
being Upsilon ⟨Υ⟩, which was originally adapted to represent [u], later fronted, becoming [y]. In Latin, a stemless variant shape of the upsilon was borrowed...
letter Y is derived from the Greek letter upsilon. It dates back to the Latin of the first century BC, when upsilon was introduced a second time, this time...
This is a list of notable members of Psi Upsilon: Chester A. Arthur (President of the United States) William Howard Taft (President of the United States)...
izhitsa, also descended from Upsilon У у : Cyrillic letter ⟨u⟩, also descended from Upsilon via the digraph of omicron and upsilon Ү ү : Cyrillic letter ⟨Ү⟩...
Upsilon Phi Sigma, (ΥΦΣ) abbreviated as UPS, is a Philippine Inter-University and Collegiate Fraternity and Sorority which claims to have been established...
Upsilon Acrux is an American progressive rock band from Los Angeles formed in 1998. Upsilon Acrux first appeared on record on a 1998 compilation entitled...
designation Upsilon Centauri (υ Cen / υ Centauri) is shared by two star systems, in the constellation Centaurus: Upsilon¹ Centauri Upsilon² Centauri They...
La Unidad Latina, Lambda Upsilon Lambda Fraternity, Inc. (ΛΥΛ or LUL) is a Latino-based collegiate fraternity. It was founded at Cornell University in...
Omicron Kappa Upsilon (ΟΚΥ) is a national honorary society serving the field of dentistry. The Society originated with the 1914 graduating class of the...
Upsilon Scorpii (υ Scorpii, abbreviated Upsilon Sco, υ Sco), formally named Lesath /ˈliːsæθ/, is a star located in the "stinger" of the southern zodiac...
Beta Upsilon Chi (ΒΥΧ, pronounced "Bucs") is an American Christian social fraternity. It was founded at the University of Texas at Austin in 1985 and...
The Upsilon Sigma Phi (ΥΣΦ) is the oldest Greek-letter organization and fraternity in Asia. Founded in 1918, it is also the oldest student organization...
Upsilon Pi Epsilon (ΥΠΕ) is the first honor society dedicated to the computing and information disciplines. Informally known as UPE, Upsilon Pi Epsilon...
Chi Upsilon Sigma (ΧΥΣ) ("Women of Wisdom")—official name is Corazones Unidos Siempre Chi Upsilon Sigma National Latin Sorority, Inc. (Hearts United Always)—is...
Lake Upsilon is a lake in Rolette County, North Dakota, in the United States. This lake was so named on account of its shape, upsilon meaning Y in Greek...
Theta Upsilon (ΘΥ) was a national women's fraternity operating in the United States from February 1921 until May 1962, when the group was absorbed by...
other founding sisters, active collegiate members and alumnae of Omega Upsilon, banded together to organize Theta Phi Alpha throughout the summer of 1912...
Gamma Theta Upsilon (ΓΘΥ or GTU) is an international honor society in geography. It was established in 1928 as a professional fraternity at Illinois State...
Beta Upsilon Chi is the largest Christian fraternity in the United States. Following is a list of Beta Upsilon Chi chapter. Active chapters are indicated...
The Bayer designation Upsilon Cassiopeiae (υ Cas / υ Cassiopeiae) is shared by two star systems, in the constellation Cassiopeia: υ¹ Cassiopeiae υ² Cassiopeiae...
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