D is the fourth letter of the Latin alphabet.

D or d may also refer to:

Places

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People with the name

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Arts, entertainment, and media

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Fictional entities

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Games

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  • D (video game), a game released in 1995 for the PC, 3DO, PlayStation and Sega Saturn

Music

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Groups and labels

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  • D (band), a Japanese rock/metal band
  • D Records, a former record label in Houston, Texas, US
  • "d:" or "d:?", often used to refer to the Christian rock band Delirious?
  • "The D", one of the names of comedy rock band Tenacious D

Albums

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Other uses in music

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Periodicals

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  • D, a weekly supplement to the Italian newspaper la Repubblica
  • D Magazine, a magazine for the city of Dallas, Texas, US

Other uses in arts, entertainment, and media

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  • D (film), a 2005 Bollywood film
  • Initial D, a 1995 Japanese manga and anime about mountain drifting that has spawned several arcade and console games
  • D, the production code for the 1964 Doctor Who serial Marco Polo
  • "D" Is for Deadbeat, the fourth novel in Sue Grafton's "Alphabet mystery" series, published in 1987
  • The D logo for the Russian television channel Domashny

Business and economics

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Computing, technology, and engineering

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Computing

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  • .d, a file format used for Agilent MassHunter mass spectrometry software
  • .d, a pathname component suffix for a directory; for example with the init program
  • -d, a suffix of a daemon, a computer program that runs as a background process
  • D - Minimal Protection, a security division in the Trusted Computer System Evaluation Criteria

Programming languages

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  • D (programming language), a C++-like programming language developed by Walter Bright
  • D, a programming language designed to be used with the DTrace dynamic tracing framework

Other uses in technology

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Linguistics

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Mathematics and science

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Measurements

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  • d, deci-, SI prefix factor 0.1

Astronomy and Earth science

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Mathematics

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Biology, chemistry, and medicine

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Physics

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Solid state physics

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Time

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Transportation

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Other uses

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See also

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