Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A regular rising and falling or movement to alternating sides; movement in waves.
  • noun A wavelike form, outline, or appearance.
  • noun One of a series of waves or wavelike segments.

from The Century Dictionary.

  • noun In playing musical instruments of the viol class, the wavy tone produced by oscillating or balancing the finger on a string that is being stopped.
  • noun The act of undulating; a waving motion; fluctuation; in physics, wave-motion: as, the undulations of water or air or the ether.
  • noun A wavy form; a form resembling that of a wave or waves; waviness.
  • noun In pathology, a particular uneasy sensation of an undulatory motion in the heart.
  • noun In surgery, a certain motion of the matter of an abscess when pressed, which indicates its fitness for opening.
  • noun A set of waved lines; a surface so marked, or such an appearance; vermiculation; waviness.
  • noun In geometry, the coming of a plane curve into a higher contact than usual with its tangent without contrary flexure.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The act of undulating; a waving motion or vibration.
  • noun A wavy appearance or outline; waviness.
  • noun The tremulous tone produced by a peculiar pressure of the finger on a string, as of a violin.
  • noun The pulsation caused by the vibrating together of two tones not quite in unison; -- called also beat.
  • noun (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun an instance or act of undulating
  • noun a wavy appearance or outline; waviness
  • noun music a tremulous tone produced by a peculiar pressure of the finger on a string
  • noun a wavelike curve; a smooth and regular rise and fall
  • noun a wavelike motion of the air; electromagnetic radiation

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun (physics) a movement up and down or back and forth
  • noun wavelike motion; a gentle rising and falling in the manner of waves
  • noun an undulating curve

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin undulatio

Examples

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