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Pronunciation:  `unju'leyshun

WordNet Dictionary
  1. [n]  (physics) a progressive disturbance propagated without displacement of the medium itself
  2. [n]  wave-like motion; a gentle rising and falling in the manner of waves
  3. [n]  an undulating curve

UNDULATION is a 10 letter word that starts with U.


 Synonyms: wave, wave
 See Also: acoustic wave, curve, curved shape, flap, flapping, fluctuation, flutter, fluttering, gravitation wave, gravity wave, impulse, motion, movement, oscillation, periodic event, pulsation, pulse, pulsing, recurrent event, seiche, sine curve, sine wave, sinusoid, sound wave, standing wave, stationary wave, vibration, wave form, wave front, wave shape, waveform



Webster's 1913 Dictionary
\Un`du*la"tion\, n. [Cf. F. ondulation.]
1. The act of undulating; a waving motion or vibration; as,
   the undulations of a fluid, of water, or of air; the
   undulations of sound.

2. A wavy appearance or outline; waviness. --Evelyn.

3. (Mus.)
   (a) The tremulous tone produced by a peculiar pressure of
       the finger on a string, as of a violin.
   (b) The pulsation caused by the vibrating together of two
       tones not quite in unison; -- called also {beat}.

4. (Physics) A motion to and fro, up and down, or from side
   to side, in any fluid or elastic medium, propagated
   continuously among its particles, but with no translation
   of the particles themselves in the direction of the
   propagation of the wave; a wave motion; a vibration.