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dilate

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di⋅late

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

Origin:
1350–1400; ME dilaten < MF dilater, L dīlātāre to spread out, equiv. to dī- di- 2 + lāt(us) broad + -āre inf. suffix


di⋅lat⋅a⋅bil⋅i⋅ty, noun
di⋅lat⋅a⋅ble, adjective


1. See expand.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
Cite This Source Link To dilate
di·late   (dī-lāt', dī'lāt')   
v.   di·lat·ed, di·lat·ing, di·lates

v.   tr.
To make wider or larger; cause to expand.
v.   intr.
  1. To become wider or larger; expand.

  2. To speak or write at great length on a subject; expatiate.


[Middle English dilaten, from Old French dilater, from Latin dīlātāre, to enlarge : dī-, dis-, apart; see dis- + lātus, wide.]
di·lat'a·bil'i·ty n., di·lat'a·ble adj., di·lat'a·bly adv., di·la'tive adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

dilate 
1393, from O.Fr. dilater, from L. dilatare "make wider, enlarge," from dis- "apart" + latus "wide" (see latitude)
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: di·late
Pronunciation: dI-'lAt, 'dI-"
Function: verb
Inflected Forms: di·lat·ed; di·lat·ing
transitive senses
: to enlarge, stretch, or cause to expand <dilate his pupils with atropine> dilate intransitive senses
: to become expandedor swollen dilates and contracts in response to variation in the amount of light>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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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