External may refer to:
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External (mathematics)
The term external is useful for describing certain algebraic structures. The term comes from the concept of an external binary operation which is a binary operation that draws from some ''external set''. To be more specific, a left external binary ...
, a concept in abstract algebra
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Externality, in economics, the cost or benefit that affects a party who did not choose to incur that cost or benefit
*
Externals
The Externals are a group of fictional characters appearing in American comic books published by Marvel Comics. Considered a rare subspecies of mutants, most of them were X-Men antagonists. The original, unused name for the group was to be ...
, a fictional group of X-Men antagonists
See also
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Internal (disambiguation)
Internal may refer to:
*Internality as a concept in behavioural economics
*Neijia, internal styles of Chinese martial arts
*Neigong or "internal skills", a type of exercise in meditation associated with Daoism
*''Internal (album)'' by Safia (band), ...
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