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undulate

[verb uhn-juh-leyt, uhn-dyuh-, -duh-; adjective uhn-juh-lit, -leyt, uhn-dyuh-, -duh-]
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verb (used without object), un·du·lat·ed, un·du·lat·ing.
  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), un·du·lat·ed, un·du·lat·ing.
  1. to cause to move in waves.
  2. to give a wavy form to.
adjective
  1. Also un·du·lat·ed. having a wavelike or rippled form, surface, edge, etc.; wavy.

Origin of undulate

1650–60; < Latin undulātus waved, equivalent to und(a) wave + -ul(a) -ule + -ātus -ate1
Related formsun·du·la·tor, nounnon·un·du·late, adjectivenon·un·du·lat·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for undulated

Historical Examples

  • The rest of the way lies over an undulated country, which slants gradually towards the mountains, that rise to the eastward.

  • The furze in the valley, swept and harrowed, undulated like a green lagoon.

    The Hill of Venus

    Nathan Gallizier

  • None of these kinds of cattle have the undulated dew-lap of the Indian cattle.

    An Account of The Kingdom of Nepal

    Fancis Buchanan Hamilton

  • Towards eight o'clock the crowd had congregated to such an extent, that it moved and undulated like the stormy ocean.

    The Mysteries of London, v. 1/4

    George W. M. Reynolds

  • For miles it undulated away until the very multitude of its low, peaceful hills shut in the horizon.

    The Leopard Woman

    Stewart Edward White


British Dictionary definitions for undulated

undulate

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) undulated
  1. having a wavy or rippled appearance, margin, or forman undulate leaf
Derived Formsundulator, 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

Word Origin and History for undulated

undulate

v.

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

Online Etymology Dictionary, © 2010 Douglas Harper