undulation Hear it!

undulation definition

un·du·la·tion (un′jə lā′s̸hən, -dyə-)

noun

    1. the act of undulating
    2. an undulating motion, as of a snake
  2. a wavy, curving form or outline, esp. one of a series
  3. Physics wave motion, as of light or sound, or a wave or vibration

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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