[dahy-leyt, di-, dahy-leyt]
- to make wider or larger; cause to expand.
- Archaic. to describe or develop at length.
- 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
SynonymsSee more synonyms on Thesaurus.com
1. See expand.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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
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
Word Origin and History for undilating
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.