Surrogate

A surrogate is a substitute or deputy for another person in a specific role and may refer to:

Relationships
  • Surrogate pregnancy, an arrangement where a woman agrees to carry and give birth to a child for another person who will become its parent at birth
  • Sexual surrogate, in sexual therapy
  • Surrogate marriage, a custom in Zulu culture

Economics

Arts
  • Author surrogate or audience surrogate, reciprocal literary techniques
  • The Surrogates, a comic book series
  • Surrogates (film), a 2009 film based on the comic book series
  • The Surrogate (1984 film), a 1984 film starring Art Hindle
  • The Surrogate (1995 film), a TV movie starring Alyssa Milano
  • The Surrogate, original title of The Sessions, a 2012 film starring John Hawkes, Helen Hunt, and William H. Macy
  • "Surro-Gate", an episode of the cartoon series American Dad!
  • "The Surrogate" (The Outer Limits), an episode of the 1990s version of The Outer Limits series
  • Surrogate Paintings, a series by American artist Allan McCollum

Science and technology
  • Surrogate model, used in engineering design
  • Surrogate endpoint, a measure of effect in clinical trials
  • Surrogate key, a unique database identification key
  • Surrogate proxy, a type of server network setup
  • Surrogate mechanism, which allows UTF-16 to represent Unicode code points beyond the Basic Multilingual Plane as a pair of surrogate code points
    • Surrogate code point, any of the range of Unicode codepoints which are used in pairs in UTF-16 to represent code points beyond the Basic Multilingual Plane
    • High surrogate or leading surrogate, a surrogate code point in the Unicode range U+D800 – U+DBFF
    • Low surrogate or trailing surrogate, a surrogate code point in the Unicode range U+DC00 – U+DFFF
    • Surrogate pair, a high surrogate followed by a low surrogate used in UTF-16 to represent a Unicode code point beyond the Basic Multilingual Plane
  • Surrogate data testing, a technique for identifying possible nonlinearity in data.
  • Surrogate, used in library science. Metadata is created to represent information resources. The metadata serves as the surrogate for stored information resources.
  • Surrogate species, used in ecology and conservation biology to indicate the following:
    • Flagship species, chosen to support the marketing of a conservation effort
    • Indicator species, which reveals the qualitative status of the environment
    • Keystone species, which has a large effect on its environment
    • Sentinel species, used to detect risks to humans by providing advance warning of a danger
    • Umbrella species, whose protection indirectly protects many other species sharing its habitat

Other uses
  • Campaign surrogate, a politician or person of influence campaigning for a presidential candidate
  • Surrogate (clergy), a deputy of a bishop or ecclesiastical judge
  • Surrogate Court, a court primarily concerned with the distribution of assets of a decedent
  • Surrogate alcohol, a substance containing alcohol that is consumed, though it is not meant for human consumption
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