contraction

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contraction,

in physics: see expansionexpansion,
in physics, increase in volume resulting from an increase in temperature. Contraction is the reverse process. When heat is applied to a body, the rate of vibration and the distances between the molecules composing it are increased and, hence, the space occupied by the
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.

contraction,

in writing: see abbreviationabbreviation,
in writing, arbitrary shortening of a word, usually by cutting off letters from the end, as in U.S. and Gen. (General). Contraction serves the same purpose but is understood strictly to be the shortening of a word by cutting out letters in the middle, the omission
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.

contraction

[kən′trak·shən]
(graphic arts)
A microfilm defect in the form of a compressed image that occurs when the film speed is reduced as the document passes through a rotary microfilmer.
(mathematics)
A function f from a metric space to itself for which there is a constant K that is less than 1 such that, for any two elements in the space, a and b, the distance between f (a) and f (b) is less than K times the distance between a and b.
(mechanics)
The action or process of becoming smaller or pressed together, as a gas on cooling.
(physiology)
Shortening of the fibers of muscle tissue.

contraction

Of concrete, the sum of volume changes occurring as the result of all processes affecting the bulk volume of a mass of concrete.

contraction

1. Physiol any normal shortening or tensing of an organ or part, esp of a muscle, e.g. during childbirth
2. Pathol any abnormal tightening or shrinking of an organ or part

contraction

References in periodicals archive ?
t] and replaces PL with the a priori probability that the CLI has entered its expansion phase, given that a month earlier the CLI was in its contraction phase.
The average contraction phase duration of softwood lumber industry cycles overlapping the business cycles (C1, C3, and C4) is 23 months.
The national office market has undoubtedly reached its peak and begun its descent into the contraction phase.
By 2003, the total proportion of the retail market positioned in the contraction phase is expected to rise beyond 80 percent.
The sensor recordings have been shown during testing and preliminary clinical trials to correlate with the force of contraction of the heart during the isovolumic contraction phase of the cardiac cycle and to the resulting recoil motion of the heart as it ejects blood into the arterial system and that these measurements of heart dynamics relate directly and predictably to heart performance.
where x[n] is the raw sEMG, c and p stands for contraction type (concentric or eccentric) and contraction phase (1, 2 or 3), respectively, and n is the sample number ranging from phase start (ps) to phase end (pe), for each one within each contraction type.
The sector would still be in a contraction phase as a reading below 50 indicates but it would mark the fourth straight month of improvement.
Has the market has moved into a margin contraction phase, or are the current constraints mere short term convulsions?
The QT interval is the time during which the heart cells "recover" their polarization after having discharged during the contraction phase, in preparation for the next beat.
During the contraction phase, a bubble can collapse so violently and rapidly that it concentrates the sound energy sufficiently to heat the enclosed gas to temperatures exceeding 10,000 kelvins.
This latent variable switches regimes following a two-state Markov process, which represents expansion and contraction phases of the business cycle.