CONCRETION

concretion. Concretion, n. an union of various parts, a mass

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Con‐cre″tion (?), n. [[L. concretio.]] 1. 1. The process of concreting; the process of uniting or of becoming united, as particles of matter into a mass; solidification.
2. 2. A mass or nodule of solid matter formed by growing together, by congelation, condensation, coagulation, induration, etc.; a clot; a lump; a calculus.
Accidental ossifications or deposits of phosphates of lime in certain organs . . . are called osseous concretions. Dunglison. 3. 3. (Geol.) A rounded mass or nodule produced by an aggregation of the material around a center; as, the calcareous concretions common in beds of clay.