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coma

 

  5  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  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Coma  \Co"ma\  (k[=o]"m[.a]),  n.  [NL.,  fr  Gr  kw^ma  lethargy,  fr 
  koima^n  to  put  to  sleep.  See  {Cemetery}.] 
  A  state  of  profound  insensibility  from  which  it  is  difficult 
  or  impossible  to  rouse  a  person.  See  {Carus}. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Coma  \Co"ma\,  n.  [L.,  hair,  fr  Gr  ko`mh.] 
  1.  (Astron.)  The  envelope  of  a  comet;  a  nebulous  covering, 
  which  surrounds  the  nucleus  or  body  of  a  comet. 
 
  2.  (Bot.)  A  tuft  or  bunch,  --  as  the  assemblage  of  branches 
  forming  the  head  of  a  tree;  or  a  cluster  of  bracts  when 
  empty  and  terminating  the  inflorescence  of  a  plant;  or  a 
  tuft  of  long  hairs  on  certain  seeds. 
 
  {Coma  Berenices}[L.]  (Astron.),  a  small  constellation  north 
  of  Virgo;  --  called  also  {Berenice's  Hair}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  coma 
  n  1:  a  state  of  deep  and  often  prolonged  unconsciousness;  usually 
  the  result  of  disease  or  injury  [syn:  {comatoseness}] 
  2:  a  usually  terminal  tuft  of  hairs  especially  on  a  seed 
  3:  (astronomy)  the  luminous  cloud  of  particles  surrounding  the 
  frozen  nucleus  of  a  comet;  forms  as  the  comet  approaches 
  the  sun  and  is  warmed 
 
  From  V.E.R.A.  --  Virtual  Entity  of  Relevant  Acronyms  13  March  2001  [vera]: 
 
  COMA 
  Cache  Only  Memory  Architecture  (SMP)




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