Proteid

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Proteid \Pro"te*id\, n. [Gr. prw^tos first.] (Physiol. Chem.)
     An older, imprecise term replaced by {{protein}}.
  
     Note: Proteid was defined in the 1913 Webster as "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.
  
     Syn: protein.
          [1913 Webster +PJC]
  
     {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; -- this is an older term
        replaced by more precise modern immunological concepts
        such as {antibody} and {immunoglobulin}. [archaic]
        [Webster 1913 Suppl. +PJC]