1. 
   undulation
   [n] - wave-like motion
   Found op http://www.webdictionary.co.uk/definition.php?query=undulation
   
   
2. 
   undulation
   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. ... 3. The tremulous tone produced by a peculiar pressure of the finger on a string, as of a violin. The pulsation cau...
   Found op http://www.mondofacto.com/facts/dictionary?undulation
   
   
3. 
   undulation
   (un´jә-) (un″dyә-la´shәn) a wavelike motion in any medium; a vibration.
   Found op http://www.encyclo.co.uk/local/21001
   
   
4. 
   Undulation
   • (n.) The pulsation caused by the vibrating together of two tones not quite in unison; -- called also beat. • (n.) 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 ...
   Found op http://thinkexist.com/dictionary/meaning/undulation/
   
   
5. 
   Undulation
   In music, the term undulation describes the tremulous tone produced by a peculiar pressure of the finger on a string, as of a violin. The term is also used to describe the pulsation caused by the vibrating together of two tones not quite in unison.
   Found op http://www.probertencyclopaedia.com/browse/VU.HTM
   
   
6. 
   Undulation
   The ups and downs and uneven contour in the ground, mainly with regards to putting green and fairways is called undulation.
   Found op http://www.buzzle.com/articles/golf-terminology-glossary-of-golf-terms.html
   
   
7. 
   undulation
   1) Curve 2) Curved shape 3) Wave 4) Wave-like motion
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/undulation/1
   
   

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