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orrerymore about orrery

orrery


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Orrery  \Or"re*ry\,  n.;  pl  {Orreries}.  [So  named  in  honor  of  the 
  Earl  of  Orrery.] 
  An  apparatus  which  illustrates,  by  the  revolution  of  balls 
  moved  by  wheelwork,  the  relative  size,  periodic  motions, 
  positions,  orbits,  etc.,  of  bodies  in  the  solar  system. 
 
  From  WordNet  r  1.6  [wn]: 
 
  orrery 
  n  :  an  apparatus  that  illustrates  the  relative  positions  and 
  motions  of  bodies  in  the  solar  system  by  rotation  and 
  revolution  of  balls  moved  by  wheelwork;  sometimes 
  incorporated  in  a  clock 




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