Meaning of dilatation

dil•a•ta•tion

Pronunciation: (dil"u-tā'shun, dī"lu-), [key]
— n.
  1. a dilated formation or part.
  2. an abnormal enlargement of an aperture or a canal of the body.
    1. an enlargement made in a body aperture or canal for surgical or medical treatment.
    2. a restoration to normal patency of an abnormally small body opening or passageway, as of the anus or esophagus.
  3. the increase in volume per unit volume of a homogeneous substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: