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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Covariant  \Co*va"ri*ant\  (k?-v?"r?-a]/>nt),  n.  (Higher  Alg.) 
  A  function  involving  the  coefficients  and  the  variables  of  a 
  quantic,  and  such  that  when  the  quantic  is  lineally 
  transformed  the  same  function  of  the  new  variables  and 
  coefficients  shall  be  equal  to  the  old  function  multiplied  by 
  a  factor.  An  invariant  is  a  like  function  involving  only  the 
  coefficients  of  the  quantic.