1. 
   gravitational
   [adj] - of or relating to or caused by gravitation
   Found op http://www.webdictionary.co.uk/definition.php?query=gravitational
   
   
2. 
   Gravitational
   Grav`i·tation·al adjective (Physics) Of or pertaining to the force of gravity; as, gravitational units.
   Found op http://www.encyclo.co.uk/webster/G/54
   
   
3. 
   gravitational
   <physics> Of or pertaining to the force of gravity; as, gravitational units. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?gravitational
   
   
4. 
   gravitational
   gravitative adjective of or relating to or caused by gravitation
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=gravitational
   
   
5. 
   Gravitational
   • (a.) Of or pertaining to the force of gravity; as, gravitational units.
   Found op http://thinkexist.com/dictionary/meaning/gravitational/
   
   
6. 
   gravitational
   1) Attraction 2) Attractive force 3) Gravitative 4) Of or relating to or caused by gravitation
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/gravitational/1
   
   

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