Crassament \Cras"sa*ment\ (kr?s"s?-ment), Crassamentum \Cras`sa*men"tum\ (-m?n"t?m), n. [L. crassamentum, fr. crassare to make thick. See {Crass}, a.] A semisolid mass or clot, especially that formed in coagulation of the blood. [1913 Webster]