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|Look up Y in Wiktionary, the free dictionary.|
Y is the twenty-fifth letter of the Latin alphabet.
Y or y may also refer to:
- 01011001 (binary number for 'Y' in ASCII), an album by Dutch progressive metal project Ayreon
- Y (album), an album by The Pop Group
- Y., an album by Spanish singer Bebe
- y, an iamamiwhoami song
- Y (EP), a single album by MBLAQ
- Yotta (Y), the SI prefix for 1024
- Yocto (y), the SI prefix for 10−24
- Yttrium, chemical symbol Y
- Year (y), a non-SI abbreviation for this unit of time
- Yellow, in the CMYK color model
- Y boson
- Y chromosome
- Haplogroup Y (mtDNA)
- Luminance (video), in many video color models, such as YIQ and YUV
- Admittance, the inverse of electrical impedance, Z
- Tyrosine, abbreviated Y or Tyr
- Y, a hypothetical stellar class of ultra-cool dwarf stars
- Dependent variable
- An axis in the Cartesian coordinate system
- Y combinator, a fixed-point combinator in combinatory logic
- The Bessel function Y
- Alleghany Corporation, NYSE ticker symbol Y
- Basque Y, a Spanish high-speed rail network so called for its Y shape
- Brigham Young University, commonly known throughout the Mormon Corridor as "the Y" (as its rival, the University of Utah, is known as "the U")
- Economy class, Y
- Generation Y
- Income, Y
- Ⓨ, a typographical symbol in Japanese resale price maintenance.
- Y (game), a board game played on a triangular board
- Y (New York City Subway service), an unused New York City Subway service label
- Y: The Last Man, a DC comics series by Brian K. Vaughan
- ¥, the symbol for yen and yuan
- Y-Front a trademark for briefs by Jockey International, used in Britain as a synonym of briefs
- YMCA, aka "the Y"
- YWCA, aka "the Y"
- YM-YWHA, aka "the Y"
- Y-shape, the shape that resembles the letter Y
- Y-stations, World War 2 listening stations
- Yukon, post code Y
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