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 ?
Future work on the identification of fetal acidosis can be done and improved by using data collected from patients that are not in labor, in order to minimize the amount of signal loss induced by fetal and maternal movement and intense uterine contractions. This can be realized by long-term CTG monitoring with a non-invasive device during pregnancy (starting with the 25-28th week of pregnancy).
They were later evaluated by the classifiers designed to determine whether they were associated with uterine contractions or were simply due to the presence of motion artifacts.
Cumulative concentrations of the extracts (0.05, 0.1, 0.2, 0.4, and 0.8 mg/ml) reduced uterine contractions induced by KCl (60 mM) and oxytocin (10 mU/ml) significantly and in a dose-dependent manner.
Although there are recorded individual pharmacological effects, investigations on the uterine contraction of the prescription are lacking.
Women were admitted with spontaneous and active labour (4cm or more cervical dilation with regular uterine contraction) between 37 to 40 weeks of gestation, with singleton pregnancy, vertex presentation and intact membrane.
It may happen when the placenta isn't delivered normally during the third stage, or if a woman has a very large fibroid that hinders uterine contraction.
postulated that the uterine contraction frequency on the day of embryo transfer would significantly decrease if VP were used from the day of oocyte retrieval, whereas applying VP in advance might exert a better relaxing effect on the uterine muscle, thereby increasing the pregnancy rate.[10],[11] Ayoubi et al .
In women with lower abdominal pain at term in whom a diagnosis of false labour and abdominal pains not typical of uterine contraction is made, a history of ingestion of traditional medicines must be taken, uterine contractions palpated for, and a cardiotocographic recording done to rule out hyperstimulation.
Recurrent variable decelerations should, of course, be evaluated for frequency, depth, and duration; uterine contraction pattern; and other FHR characteristics.