Concretion
Pronunciation : Con*cre"tion
Part of Speech : n.
Etymology : [L. concretio.]
Definition : 1. The process of concreting; the process of uniting or of becoming united, as particles of matter into a mass; solidification.
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. (Geol.)
Defn: A rounded mass or nodule produced by an aggregation of the material around a center; as, the calcareous concretions common in beds of clay.
Source : Webster's Unabridged Dictionary, 1913