Dilation

Look up dilatation, dilate, or dilation in Wiktionary, the free dictionary.

Dilation (or dilatation) may refer to:

Physiology or medicine

Pupillary dilation, dilation of the pupil of the eye
Cervical dilation, the widening of the cervix in childbirth, miscarriage etc.
Dilation and curettage, 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 dilatation, a procedure for widening a narrowed esophagus
Vasodilation, the widening of luminal diameter in blood vessels

Dilation (affine geometry), an affine transformation
Dilation (metric space), 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, where scale factors may differ in different directions

Thermal expansion 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

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