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undulation

[uhn-juh-ley-shuh n, uhn-dyuh-, -duh-]
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noun
  1. an act of undulating; a wavelike motion.
  2. a wavy form or outline.
  3. one of a series of wavelike bends, curves, or elevations.
  4. Physics.
    1. a wave.
    2. the motion of waves.

Origin of undulation

First recorded in 1640–50; undul(ate) + -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for undulation

Historical Examples

  • In undulation, not one wave is like another; in vibration, every pulse is alike.

    The Storm-Cloud of the Nineteenth Century

    John Ruskin

  • No undulation of air can there convey sound, song, or speech.

    Moon Lore

    Timothy Harley

  • It is because—this is my hypothesis—these properties, if they are in the undulation, are not there alone.

  • The motion of this latter is thought, of which perception is the first undulation.

  • It swayed with a truly Hellenic undulation like the pictures in the mythology.

    The Joys of Being a Woman

    Winifred Kirkland


British Dictionary definitions for undulation

undulation

noun
  1. the act or an instance of undulating
  2. any wave or wavelike form, line, etc
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 undulation

n.

1640s, from Medieval Latin *undulatio, from Late Latin undulatus "wavy, undulated," from undula "wavelet," diminutive of Latin unda "wave" (see water).

Online Etymology Dictionary, © 2010 Douglas Harper