Dilation
Dilation (or dilatation) may refer to:
Physiology or medicine
* Cervical dilation, the widening of the cervix in childbirth, miscarriage etc.
* Coronary dilation, or coronary reflex
* Dilation and curettage, the opening of the cervix and surgic ...
(or dilatation) may refer to:
Physiology or medicine
*
Cervical dilation, the widening of the cervix in childbirth, miscarriage etc.
*
Coronary dilation Coronary reflex is the change of coronary diameter in response to chemical, neurological or mechanical stimulation of the coronary arteries.
The coronary reflexes are stimulated differently from the rest of the vascular system.
Causes of coronary c ...
, or coronary reflex
*
Dilation and curettage
Dilation (or dilatation) and curettage (D&C) refers to the dilation (widening/opening) of the cervix and surgical removal of part of the lining of the uterus and/or contents of the uterus by scraping and scooping (curettage). It is a gynecologic ...
, the opening of the cervix and surgical removal of the contents of the uterus
*
Dilation and evacuation, the dilation of the cervix and evacuation of the contents of the uterus
*
Esophageal dilation, a procedure for widening a narrowed esophagus
*
Pupillary dilation
Pupillary response is a physiological response that varies the size of the pupil, via the optic and oculomotor cranial nerve.
A constriction response (miosis), is the narrowing of the pupil, which may be caused by scleral buckles or drugs such a ...
(also called mydriasis), the widening of the pupil of the eye
*
Vasodilation, the widening of luminal diameter in blood vessels
Mathematics
*
Dilation (affine geometry)
In mathematics, a homothety (or homothecy, or homogeneous dilation) is a transformation of an affine space determined by a point ''S'' called its ''center'' and a nonzero number ''k'' called its ''ratio'', which sends point X to a point X' by th ...
, an affine transformation
*
Dilation (metric space) In mathematics, a dilation is a function f from a metric space M into itself that satisfies the identity
:d(f(x),f(y))=rd(x,y)
for all points x, y \in M, where d(x, y) is the distance from x to y and r is some positive real number.
In Euclidean spa ...
, a function from a metric space into itself
*
Dilation (operator theory), a dilation of an operator on a Hilbert space
*
Dilation (morphology), an operation in mathematical morphology
*
Scaling (geometry), including:
** Homogeneous dilation (
homothety), the scalar multiplication operator on a vector space or affine space
**
Inhomogeneous dilation
In affine geometry, uniform scaling (or isotropic scaling) is a linear transformation that enlarges (increases) or shrinks (diminishes) objects by a ''scale factor'' that is the same in all directions. The result of uniform scaling is similar ...
, where scale factors may differ in different directions
Chemistry and physics
*
Dilation (physics), size increase
*
Thermal expansion
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 ...
of crystalline triglycerides is referred to as dilation
*
Scale invariance, a feature of objects or laws that do not change if length scales (or energy scales) are multiplied by a common factor
*
Time dilation, the observation that another's clock is ticking at a slower rate as measured by one's own clock
Music
*
''Dilate'' (Bardo Pond album)
*
''Dilate'' (Ani DiFranco album)
*
Dilate (musical project), ambient solo project of Vampire Rodents keyboardist Victor Wulf
*
''Dilation'' (album), 2011 album by comedian Rory Scovel
See also
*
Dilution (disambiguation)
{{disambiguation