dilation Hear it!

dilation definition

di·la·tion (dī lā′s̸hən, di-)

noun

  1. a dilating or being dilated, as of the pupil of an eye, a blood vessel, or the cervix during childbirth
  2. a dilated part

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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