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Definition of undulate


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undulate
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undulate
undulate leaf
un·du·late  audio  (nj-lt, ndy-, -d-) KEY  

VERB:
un·du·lat·ed , un·du·lat·ing , un·du·lates
VERB:
tr.
  1. To cause to move in a smooth wavelike motion.
  2. To give a wavelike appearance or form to.
VERB:
intr.
  1. To move in waves or with a smooth, wavelike motion. See Synonyms at swing.
  2. To have a wavelike appearance or form.
  3. To increase and decrease in volume or pitch as if in waves.
ADJECTIVE:
(-lt, -lt)
Having a wavy outline or appearance: leaves with undulate margins.

ETYMOLOGY:
From Late Latin undula, small wave, diminutive of Latin unda, wave; see wed- 1 in Indo-European roots

OTHER FORMS:
undu·la·tory   (-l-tôr, -tr) KEY  (Adjective)



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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
Published by the Houghton Mifflin Company. All rights reserved.
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