4  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Duplicate  \Du"pli*cate\,  n. 
  1.  That  which  exactly  resembles  or  corresponds  to  something 
  else;  another,  correspondent  to  the  first  hence  a  copy; 
  a  transcript;  a  counterpart. 
 
  I  send  a  duplicate  both  of  it  and  my  last  dispatch. 
  --  Sir  W. 
  Temple. 
 
  2.  (Law)  An  original  instrument  repeated;  a  document  which  is 
  the  same  as  another  in  all  essential  particulars,  and 
  differing  from  a  mere  copy  in  having  all  the  validity  of 
  an  original.  --Burrill. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Duplicate  \Du"pli*cate\,  v.  t.  [imp.  &  p.  p.  {Duplicated};  p. 
  pr  &  vb  n.  {Duplicating}.] 
  1.  To  double;  to  fold;  to  render  double. 
 
  2.  To  make  a  duplicate  of  (something);  to  make  a  copy  or 
  transcript  of  --Glanvill. 
 
  3.  (Biol.)  To  divide  into  two  by  natural  growth  or 
  spontaneous  action  as  infusoria  duplicate  themselves. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Duplicate  \Du"pli*cate\,  a.  [L.  duplicatus  p.  p.  of  duplicare 
  to  double,  fr  duplex  double,  twofold.  See  {Duplex}.] 
  Double;  twofold. 
 
  {Duplicate  proportion}  or  {ratio}  (Math.),  the  proportion  or 
  ratio  of  squares.  Thus  in  geometrical  proportion,  the 
  first  term  to  the  third  is  said  to  be  in  a  duplicate  ratio 
  of  the  first  to  the  second  or  as  its  square  is  to  the 
  square  of  the  second  Thus  in  2,  4,  8,  16,  the  ratio  of  2 
  to  8  is  a  duplicate  of  that  of  2  to  4,  or  as  the  square  of 
  2  is  to  the  square  of  4. 
 
  From  WordNet  r  1.6  [wn]: 
 
  duplicate 
  adj  1:  identically  copied  from  an  original;  "a  duplicate  key" 
  2:  being  two  identical  [syn:  {matching},  {twin(a)},  {twinned}] 
  n  1:  something  additional  of  the  same  kind  "  he  always  carried 
  extras  in  case  of  an  emergency"  [syn:  {extra}] 
  2:  either  of  two  things  that  correspond  to  one  another  exactly; 
  "he  made  a  duplicate  for  the  files"  [syn:  {duplication}] 
  v  1:  make  or  do  or  perform  again  [syn:  {reduplicate},  {double},  {repeat}, 
  {replicate}] 
  2:  duplicate  or  match;  "The  polished  surface  twinned  his  face 
  and  chest  in  reverse"  [syn:  {twin},  {parallel}] 
  3:  increase  twofold;  "The  population  doubled  within  50  years" 
  [syn:  {double}] 

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