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envelope

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envelope


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Envelope  \En"vel*ope\  (?;  277),  Envelop  \En*vel"op\  (?;  277),  n. 
  [F.  enveloppe.] 
  1.  That  which  envelops,  wraps  up  encases,  or  surrounds;  a 
  wrapper;  an  inclosing  cover;  esp.,  the  cover  or  wrapper  of 
  a  document,  as  of  a  letter. 
 
  2.  (Astron.)  The  nebulous  covering  of  the  head  or  nucleus  of 
  a  comet;  --  called  also  {coma}. 
 
  3.  (Fort.)  A  work  of  earth,  in  the  form  of  a  single  parapet 
  or  of  a  small  rampart.  It  is  sometimes  raised  in  the  ditch 
  and  sometimes  beyond  it  --Wilhelm. 
 
  4.  (Geom.)  A  curve  or  surface  which  is  tangent  to  each  member 
  of  a  system  of  curves  or  surfaces,  the  form  and  position 
  of  the  members  of  the  system  being  allowed  to  vary 
  according  to  some  continuous  law.  Thus  any  curve  is  the 
  envelope  of  its  tangents. 
 
  From  WordNet  r  1.6  [wn]: 
 
  envelope 
  n  1:  a  flat  rectangular  paper  container  for  papers 
  2:  any  wrapper  or  covering 
  3:  a  curve  that  is  tangent  to  each  of  a  family  of  curves 
  4:  a  natural  covering  (as  by  a  fluid);  "the  spacecraft  detected 
  an  envelope  of  gas  around  the  comet" 
  5:  the  maximum  operating  capability  of  a  system;  "test  pilots 
  try  to  push  the  envelope" 
  6:  the  bag  containing  the  gas  in  a  balloon  [syn:  {gasbag}] 
 
  From  THE  DEVIL'S  DICTIONARY  ((C)1911  Released  April  15  1993)  [devils]: 
 
  ENVELOPE,  n.  The  coffin  of  a  document;  the  scabbard  of  a  bill;  the 
  husk  of  a  remittance;  the  bed-gown  of  a  love-letter. 
 
 




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