Source : Webster's Revised Unabridged Dictionary (1913)

Coagulate \Co*ag"u*late\, a. [L. coagulatus, p. p. of coagulare
   to coagulate, fr. coagulum means of coagulation, fr. cogere,
   coactum, to drive together, coagulate. See {Cogent}.]
   Coagulated. [Obs.] --Shak.

Coagulate \Co*ag"u*late\, v. t. [imp. & p. p. {Coagulated}; p.
   pr. & vb. n. {Coagulating}.]
   To cause (a liquid) to change into a curdlike or semisolid
   state, not by evaporation but by some kind of chemical
   reaction; to curdle; as, rennet coagulates milk; heat
   coagulates the white of an egg.

Coagulate \Co*ag"u*late\, v. i.
   To undergo coagulation. --Boyle.

   Syn: To thicken; concrete; curdle; clot; congeal.

Source : WordNet®

coagulate
     adj : transformed from a liquid into a soft semisolid or solid
           mass; "coagulated blood"; "curdled milk"; "grumous
           blood" [syn: {coagulated}, {curdled}, {grumous}, {grumose}]

coagulate
     v 1: change from a liquid to a thickened or solid state;
          "coagulated blood" [syn: {clot}]
     2: cause to change from a liquid to a solid or thickened state
        [syn: {clot}]