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Meaning of undulation

un•du•la•tion

Pronunciation: (un"ju-lā'shun, un"dyu-, -du-), [key]
— n.
  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.
    1. a wave.
    2. the motion of waves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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