2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Proteid  \Pro"te*id\,  n. 
 
  {Defensive  proteid}  (Physiol.  Chem.),  one  of  a  class  of 
  proteid  substances,  present  in  some  animal  tissues  and 
  fluids,  that  make  the  body  immune  to  certain  infectious 
  diseases  by  destroying  or  rendering  inactive  the  toxic 
  products  of  bacterial  growth. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Proteid  \Pro"te*id\,  n.  [Gr.  prw^tos  first.]  (Physiol.  Chem.) 
  One  of  a  class  of  amorphous  nitrogenous  principles, 
  containing,  as  a  rule  a  small  amount  of  sulphur;  an 
  albuminoid,  as  blood  fibrin,  casein  of  milk,  etc  Proteids 
  are  present  in  nearly  all  animal  fluids  and  make  up  the 
  greater  part  of  animal  tissues  and  organs.  They  are  also 
  important  constituents  of  vegetable  tissues.  See  2d  Note 
  under  {Food}.  --  {Pro"te*id},  a. 

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