concretion

CONCRETION, n.

1. The act of concreting; the process by which soft or fluid bodies become thick, consistent, solid or hard; the act of growing together, or of uniting, by other natural process, the small particles of matter into a mass.

2. The mass or solid matter formed by growing together, by congelation, condensation, coagulation or induration; a clot; a lump; a solid substance formed in the soft parts or in the cavities of animal bodies.