dilation

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dilation

[də′lā·shən]
(mathematics)
A transformation which changes the size, and only the size, of a geometric figure.
An operation that provides a relatively flexible boundary to a fuzzy set; for a fuzzy set A with membership function mA, a dilation of A is a fuzzy set whose membership function has the value [mA (x)]βfor every element x, where β is a fixed number that is greater than 0 and less than 1.
(science and technology)
The act or process of stretching or expanding.
References in periodicals archive ?
Other than the necessity of fission, the move to dilate the body, according to Barba, always involves "the rupture": "this rupture of automatisms is not expression.
It is already known that when it gets darker, pupils dilate.
Progressively larger Savary dilators are then advanced over the wire to dilate the stricture.
The materials prevented the adhesion of platelets around sensors implanted in dogs' arteries and also seemed to dilate those blood vessels, helping blood to flow more freely.
In a study, Vita found that drinking black tea increases the ability of the blood vessels in a person's arm to dilate.
It's known to dilate blood vessels, allowing more blood to flow through them.
This time the doctor sat Amy in a darkened room so her pupils would dilate, then took another look.
Early Romans used belladonna to contaminate enemies' food reserves and perhaps to get in the mood for bacchanalian orgies; women used it cosmetically to dilate their pupils (hence the Italian name "bella donna" for "beautiful woman").
There is a real need for a drug that can permanently dilate blood vessels without the cutting, crushing, tearing, and scraping that is associated with current techniques," added Franano.
Because the compound causes blood vessels to dilate, enabling more blood to flow through them, researchers suspected that inhaling nitric oxide might help patients who were having trouble breathing.