[dahy-leyt, di-, dahy-leyt]
verb (used with object), di·lat·ed, di·lat·ing.
to make wider or larger; cause to expand.
Archaic. to describe or develop at length.
verb (used without object), di·lat·ed, di·lat·ing.
to spread out; expand.
to speak or write at length; expatiate (often followed by on or upon).
Origin of dilate
1350–1400; Middle English dilaten < Middle French dilater, Latin dīlātāre to spread out, equivalent to dī- di-2 + lāt(us) broad + -āre infinitive suffix
Synonyms for dilate
1. See expand.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for undilated
Historical Examples of undilated
A dry labor in a primipara with an undilated cervix is a grave condition.The Ethics of Medical Homicide and Mutilation
to expand or cause to expand; make or become wider or largerthe pupil of the eye dilates in the dark
(intr; often foll by on or upon) to speak or write at length; expand or enlarge
Word Origin for dilate
C14: from Latin dīlātāre to spread out, amplify, from dis- apart + lātus wide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
To make or become wider or larger.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.