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armil

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armil


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Armil  \Ar"mil\,  n.  [L.  armilla  a  bracelet,  fr  armus  arm:  cf 
  OF  armille.] 
  1.  A  bracelet.  [Obs.] 
 
  2.  An  ancient  astronomical  instrument. 
 
  Note:  When  composed  of  one  ring  placed  in  the  plane  of  the 
  equator  for  determining  the  time  of  the  equinoxes,  it 
  is  called  an  equinoctial  armil;  when  of  two  or  more 
  rings,  one  in  the  plane  of  the  meridian,  for  observing 
  the  solstices,  it  is  called  a  solstitial  armil. 
  --Whewell. 




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