n. [ L. concretio. ] 1. The process of concreting; the process of uniting or of becoming united, as particles of matter into a mass; solidification. [ 1913 Webster ]
2. A mass or nodule of solid matter formed by growing together, by congelation, condensation, coagulation, induration, etc.; a clot; a lump; a calculus. [ 1913 Webster ]
Accidental ossifications or deposits of phosphates of lime in certain organs . . . are called osseous concretions. Dunglison. [ 1913 Webster ]
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. [ 1913 Webster ]
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