\Co*ag`u*la"tion\, n. [L. coagulatio.]
1. The change from a liquid to a thickened, curdlike,
   insoluble state, not by evaporation, but by some kind of
   chemical reaction; as, the spontaneous coagulation of
   freshly drawn blood; the coagulation of milk by rennet, or
   acid, and the coagulation of egg albumin by heat.
   Coagulation is generally the change of an albuminous body
   into an insoluble modification.
2. The substance or body formed by coagulation.