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ureamore about urea

urea


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Urea  \U"re*a\,  a.  [NL.  See  {Urine}.]  (Physiol.  Chem.) 
  A  very  soluble  crystalline  body  which  is  the  chief 
  constituent  of  the  urine  in  mammals  and  some  other  animals. 
  It  is  also  present  in  small  quantity  in  blood,  serous  fluids, 
  lymph,  the  liver,  etc 
 
  Note:  It  is  the  main  product  of  the  regressive  metamorphosis 
  (katabolism)  of  proteid  matter  in  the  body,  and  is 
  excreted  daily  to  the  amount  of  about  500  grains  by  a 
  man  of  average  weight.  Chemically  it  is  carbamide, 
  {CO(NH2)2},  and  when  heated  with  strong  acids  or 
  alkalies  is  decomposed  into  carbonic  acid  and  ammonia. 
  It  unites  with  acids  to  form  salts,  as  nitrate  of  urea, 
  and  it  can  be  made  synthetically  from  ammonium  cyanate, 
  with  which  it  is  isomeric. 
 
  {Urea  ferment},  a  soluble  ferment  formed  by  certain  bacteria, 
  which  however,  yield  the  ferment  from  the  body  of  their 
  cells  only  after  they  have  been  killed  by  alcohol.  It 
  causes  urea  to  take  up  water  and  decompose  into  carbonic 
  acid  and  ammonia.  Many  different  bacteria  possess  this 
  property,  especially  {Bacterium  ure[ae]}  and  {Micrococcus 
  ure[ae]},  which  are  found  abundantly  in  urines  undergoing 
  alkaline  fermentation. 
 
  From  WordNet  r  1.6  [wn]: 
 
  urea 
  n  :  the  chief  solid  component  of  mammalian  urine;  synthesized 
  from  ammonia  and  carbon  dioxide  and  used  as  fertilizer 
  and  in  animal  feed  and  in  plastics  [syn:  {carbamide}] 




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