Daily Almanac for
May 26, 2012
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Dictionary


dil•a•ta•tion



Pronunciation: (dil"u-tā'shun, dī"lu-), [key]
—n.
1. a dilated formation or part.
2. Pathol.an abnormal enlargement of an aperture or a canal of the body.
3. Surg.
a. an enlargement made in a body aperture or canal for surgical or medical treatment.
b. a restoration to normal patency of an abnormally small body opening or passageway, as of the anus or esophagus.
4. Mech.the increase in volume per unit volume of a homogeneous substance. Also,dilation.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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