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R (disambiguation)

Topics referred to by the same term From Wikipedia, the free encyclopedia

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R, or r, is the eighteenth letter of the English alphabet.

R or r may also refer to:

Science

Biology and medicine

Astronomy

Physics

Temperature scales

Chemistry

  • Gas constant (R), in chemistry
  • R, one of two chiral center configurations in the R/S system
  • Alkyl group, commonly marked as R in structural formulas
  • Side chain (an unspecified group of atoms), in a chemical or structural formula

Mathematics

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Technology and engineering

Computing

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Arts and entertainment

Music

Film

Television

Video games

Organisations

Transportation

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Other uses

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See also

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