to change from a fluid into a thickened mass; curdle; congeal

Let the pudding stand two hours until it coagulates.

Biology . (of blood) to form a clot.

Physical Chemistry . (of colloidal particles) to flocculate or cause to flocculate by adding an electrolyte to an electrostatic colloid.

Obsolete . coagulated.

noun

dissolution , melting , opening , thinning

noun

agglomeration , caseation , concentration , concretion , condensation , congelation , consolidation , curdling , embolism , gelatination , incrassation , inspissation , jellification , thickening