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A (disambiguation)

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A is the first letter of the Latin and English alphabet.

A may also refer to:

Science and technology

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Quantities and units

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Astronomy

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Biology

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Computing

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Programming languages

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Other uses in computing

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Mathematics and logic

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Other uses in science and technology

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  • A battery, a vacuum tube filament type battery
  • A battery (size), a standard battery size
  • Anode, an electrode
  • A, historical symbol for chemical element argon, currently Ar
  • The center of a hexagonal face of the Brillouin zone of a hexagonal lattice, in physics

Arts and media

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Books

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Film and TV

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Films

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Film ratings

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Television

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Music

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Performers

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  • A (band), a British alternative rock band

Albums

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Songs

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Other media

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Geography

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Linguistics

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Letters

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  • A (or a), the first letter of the Latin alphabet
  • A (Indic), the many form of brahmic "a"
  • A (Bengali), the romanized name of the Bengali letter অ
  • A (cuneiform), the romanized name of a cuneiform sign
  • A (Cyrillic) (A or а), the first letter of the Cyrillic alphabet
  • A (kana) (or a), the romanized name of the Hiragana syllable letter あ and of the Katakana syllable letter ア used in Japanese, which may also be used to represent Asia
  • Alpha (Α or α), the first letter of the Greek alphabet

Other uses in linguistics

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People

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Philosophy and religion

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Transport

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Automobile

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Rail

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Ships

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Other uses

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  • A (grade), an academic grade
  • A series of paper sizes defined by ISO 216, e.g. A4, A5 sizes
  • A formation, an American football offensive formation
  • A-frame, a type of structure
  • Aalto University, public research university in Espoo, Finland
  • Ace, a playing card
  • Agilent Technologies, with U.S. ticker symbol A
  • Sentinel Peak (Arizona), more commonly known as "A" Mountain for the human-made rock formation in the shape of the letter
  • Alfa, the military time zone code for UTC+01:00
  • Farmall A, a tractor produced by International Harvester from 1939 to 1947
  • Oakland A's, or the Athletics, a professional baseball team based in Oakland, California, United States

See also

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