Contraction
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Contraction can mean:
- Contraction (childbirth), a contraction during childbirth
- Contraction (grammar), a new word formed from two or more individual words, see also abbreviation and acronym
- Contraction (phonology)
- The reverse of thermal expansion
- Contraction mapping, in mathematics, a type of function on a metric space
- Edge contraction or vertex contraction, graph operations used in graph theory
- Muscle contraction, one that occurs when a muscle fiber shortens
- Tensor contraction in tensor theory (in mathematics)
Contraction can also refer to:
- A structural rule in proof theory, see idempotency of entailment