Con-crē'tion, n.

(kon-krē/shun), n. [Lat. concretio.]

1. The act of concreting, or of uniting 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. “Concretions of slime.” Bacon.
3. (Geol.) A rounded mass or nodule produced by an aggregation of the material around a center; as, calcareous concretions, &c. Dana.