Contraction may refer to:
Linguistics
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Contraction (grammar)
A contraction is a shortened version of the spoken and written forms of a word, syllable, or word group, created by omission of internal letters and sounds.
In linguistic analysis, contractions should not be confused with crasis, abbreviation ...
, a shortened word
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Poetic contraction
Poetic contractions are contractions of words found in poetry but not commonly used in everyday modern English. Also known as elision or syncope, these contractions are usually used to lower the number of syllables in a particular word in order ...
, omission of letters for poetic reasons
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Elision
In linguistics, an elision or deletion is the omission of one or more sounds (such as a vowel, a consonant, or a whole syllable) in a word or phrase. However, these terms are also used to refer more narrowly to cases where two words are run toget ...
, omission of sounds
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Syncope (phonology)
In phonology, syncope (; from grc, , , cutting up) is the loss of one or more sounds from the interior of a word, especially the loss of an unstressed vowel. It is found in both synchronic and diachronic analyses of languages. Its opposite, whe ...
, omission of sounds in a word
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Synalepha, merged syllables
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Synaeresis, combined vowels
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Crasis, merged vowels or diphthongs
Mathematics and logic
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Contraction (operator theory), in operator theory, state of a bounded operator between normed vector spaces after suitable scaling
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Contraction hierarchies In computer science, the method of contraction hierarchies is a speed-up technique for finding the shortest-path in a graph. The most intuitive applications are car-navigation systems: a user wants to drive from A to B using the quickest possible ...
, in applied mathematics, a technique to speed up shortest-path routing
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Contraction mapping In mathematics, a contraction mapping, or contraction or contractor, on a metric space (''M'', ''d'') is a function ''f'' from ''M'' to itself, with the property that there is some real number 0 \leq k < 1 such that for all ''x'' and ...
, a type of function on a metric space
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Edge contraction or vertex contraction, graph operations used in graph theory
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Tensor contraction, an operation on one or more tensors that arises from the natural pairing of a finite-dimensional vector space and its dual
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Left contraction and right contraction of multivectors in a geometric algebra, extensions of the inner product
* One of the rules of
conditional independence, in probability
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Contraction (logic), a structural rule in proof theory
Medicine
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Muscle contraction, the physiological condition of a muscle which generates tension (traction) at its origin and insertion
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Uterine contraction, contraction of the uterus, such as during childbirth
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Contractility, the intrinsic ability of the heart/myocardium to contract
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Wound contraction
Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue.
In undamaged skin, the epidermis (surface, epithelial layer) and dermis (deeper, connective layer) form a protective barrier agai ...
, a stage in wound healing
Other uses
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Contraction (economics)
In economics, a recession is a business cycle contraction when there is a general decline in economic activity. Recessions generally occur when there is a widespread drop in spending (an adverse demand shock). This may be triggered by various ...
, a general slowdown in economic activity; the opposite of economic expansion
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Contraction (physics)
Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions.
Temperature is a monotonic function of the average molecular kinetic ...
, change in the volume of matter in response to a change in temperature
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Lanthanide contraction, the decrease in size of the ionic radius of lanthanide elements with their growing atomic number
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''Contracted'' (film), a 2013 horror thriller film by Eric England and its sequel ''
Contracted: Phase II'' (2015) which directed by Josh Forbes
See also
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Contract (disambiguation)
A contract is a legally binding agreement between at least two parties.
Contract may also refer to:
Film and television Film
* ''The Contract'' (1971 film), an Israeli comedy film
* ''The Contract'' (1972 film) or ''Caliber 9'', an Italian crime ...
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Contraction principle (disambiguation)
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