The Collaborative International Dictionary of English v.0.48:

Coagulated \Co*ag"u*la`ted\, a.
   Changed into, or contained in, a coagulum or a curdlike mass;
   curdled.
   [1913 Webster]

   Coagulated proteid (Physiol. Chem.), one of a class of
      bodies formed in the coagulation of a albuminous substance
      by heat, acids, or other agents.
      [1913 Webster]