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Noun: undulation  ,ún-ju'ley-shun [N. Amer], ,ún-dyû'ley-shun [Brit]
  1. An undulating curve
    - wave
  2. Wavelike motion; a gentle rising and falling in the manner of waves
  3. (physics) a movement up and down or back and forth
    - wave

Derived forms: undulations

Type of: curve, curved shape, motion, movement

Encyclopedia: Undulation