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Word of the Day
Monday, September 22, 2008

Definitions for undulate

  1. To move in, or have, waves; to vibrate; to wave; as, undulating air.

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Citations for undulate
The actors' hands quiver and the poles undulate in the wind. Peter Marks, New York Times
Rather than tuna, several hundred white-sided dolphins come into focus, undulating crisply through the sea surface below. Carl Safina, Song for the Blue Ocean:Encounters Along the World's Coasts and Beneath the Seas
Origin of undulate
1650-1660
Undulate derives from Latin undulare, from undula, a little wave, from unda, a wave.