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undulate

[v. uhn-juh-leyt, uhn-dyuh-, -duh-; adj. uhn-juh-lit, -leyt, uhn-dyuh-, -duh-] /v. ˈʌn dʒəˌleɪt, ˈʌn dyə-, -də-; adj. ˈʌn dʒə lɪt, -ˌleɪt, ˈʌn dyə-, -də-/
verb (used without object), undulated, undulating.
1.
to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement:
The flag undulates in the breeze.
2.
to have a wavy form or surface; bend with successive curves in alternate directions.
3.
(of a sound) to rise and fall in pitch:
the wail of a siren undulating in the distance.
verb (used with object), undulated, undulating.
4.
to cause to move in waves.
5.
to give a wavy form to.
adjective
6.
Also, undulated. having a wavelike or rippled form, surface, edge, etc.; wavy.
Origin
1650-1660
1650-60; < Latin undulātus waved, equivalent to und(a) wave + -ul(a) -ule + -ātus -ate1
Related forms
undulator, noun
nonundulate, adjective
nonundulating, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for undulating
  • By undulating back and forth, the snake can actually make turns.
  • Hundreds of pickers were trudging across an undulating landscape of garbage.
  • Now the damaged roads and cordons give a bike the edge in efficiency, as long as you are prepared for undulating paths.
  • The bumpy country road wound deeper into the scrubland until at last an undulating shape appeared in the distance.
  • The courses are well maintained and manicured, with undulating greens.
  • Glacial landforms include nearly level and undulating outwash and till plains, pitted outwash plains, and steep moraines.
  • It lies on undulating land, rising from above sea level in the west to in the east.
British Dictionary definitions for undulating

undulate

/ˈʌndjʊˌleɪt/
verb
1.
to move or cause to move in waves or as if in waves
2.
to have or provide with a wavy form or appearance
adjective (ˈʌndjʊlɪt; -ˌleɪt)
3.
having a wavy or rippled appearance, margin, or form: an undulate leaf
Derived Forms
undulator, noun
Word Origin
C17: from Latin undulātus, from unda a wave
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
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Word Origin and History for undulating

undulate

v.

1660s, from undulation. Related: undulated, undulating.

Online Etymology Dictionary, © 2010 Douglas Harper
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