Contraction

From Wikipedia, the free encyclopedia

Contraction may refer to:

• Contraction (childbirth), a contraction during childbirth (basically referring to muscle contraction)
• Contraction (grammar), a word formed from two or more individual words.
• Syncope, the loss or reduction of sounds within a word.
• Braille contraction, used to decrease space and increase reading speed
• Economic contraction, a reversal of economic growth; the opposite of economic expansion.
• 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 lengthens or shortens
• Tensor contraction in tensor theory (in mathematics)
• Contraction, a stage in wound healing
• A structural rule in proof theory, see idempotency of entailment