contraction


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Related to contraction: muscle contraction

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 ?
The contraction of smooth muscle is regulated by mediators such as neural and humoral factors, mechanical forces, and vasoactive substances from endothelial cells.
14) motions, while the position based cannot be rejected for the contraction motion ([ji al cuadrado](5)=9.
I used a birthing ball to help open me, not to mention that it really helped during the contractions to focus on rocking instead of the pain.
Thus, recent research that suggests a PFM contraction is associated with co-activation of the abdominal muscles, and vice versa (e.
Although the contraction was slower than that of the previous month, the resulting political tensions worsened business activity at the Lebanese private companies, which was reflected in the dropping levels of output and new orders.
While the effect of acetylcholine on the frequency and force of spontaneous contractions over 5 min was seen as effect on spontaneous activity.
Contractions and symbols are easily located in both print-to-braille and braille-to-print formats.
Then, a rapid phasic contraction leads the edge of the upper valve to hit the lever during its downward movement.
New orders picked up slightly in March after two months of contraction, though some respondents mentioned the negative impact of economic and political insecurity on their order books.
Amplitudes of contraction with maximum dose of histamine and insulin (10-3 M) were 92.
Our previous study also suggested that magnolol's ability to inhibit colonic contraction induced by high [K.
During the contraction of the ventricles, the systolic blood pressure (SBP) rises and then decreases (i.