[uhn-juh-ley-shuh n, uhn-dyuh-, -duh-]
See more synonyms for undulation on Thesaurus.com
  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

Related Words for undulation

fluctuation, sway, roll, waviness

Examples from the Web for undulation

Historical Examples of undulation

British Dictionary definitions for undulation


  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

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