dilate

[dahy-leyt, di-, dahy-leyt]
verb (used with object), dilated, dilating.
1.
to make wider or larger; cause to expand.
2.
Archaic. to describe or develop at length.
verb (used without object), dilated, dilating.
3.
to spread out; expand.
4.
to speak or write at length; expatiate (often followed by on or upon ).

Origin:
1350–1400; Middle English dilaten < Middle French dilater, Latin dīlātāre to spread out, equivalent to dī- di-2 + lāt(us) broad + -āre infinitive suffix

dilatability, noun
dilatable, adjective
nondilatability, noun
nondilatable, adjective
overdilate, verb, overdilated, overdilating.
redilate, verb, redilated, redilating.
self-dilated, adjective
subdilated, adjective
undilatable, adjective
undilated, adjective
undilating, adjective

dilate, dilute.


1. See expand.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
dilate (daɪˈleɪt, dɪ-)
 
vb
1.  to expand or cause to expand; make or become wider or larger: the pupil of the eye dilates in the dark
2.  (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]
 
di'latable
 
adj
 
dilata'bility
 
n
 
di'latableness
 
n
 
di'lation
 
n
 
dilatation
 
n
 
dila'tational
 
adj
 
dilative
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

dilate
late 14c., from O.Fr. dilater, from L. dilatare "make wider, enlarge," from dis- "apart" + latus "wide" (see latitude). Related: Dilated.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

dilate di·late (dī-lāt', dī'lāt')
v. di·lat·ed, di·lat·ing, di·lates
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.
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Example sentences
Dilated cardiomyopathy is a condition in which the heart becomes weakened and
  enlarged, and it cannot pump blood efficiently.
His doctor found nothing physically wrong with him, except for extremely
  dilated pupils.
Hollow organs, such as the heart, must be dilated during fixation.
The mutability of human things has been a theme on which essayists have written
  and preachers dilated.
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