concretion

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con·cre·tion / kənˈkrēshən; kän-/ • n. a hard solid mass formed by the local accumulation of matter, esp. within the body or within a mass of sediment. ∎  the formation of such a mass.DERIVATIVES: con·cre·tion·ar·y / -shəˌnerē/ adj.

concretion

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concretion
1. Roughly spherical or ellipsoidal body, produced as a result of local early cementation within a sediment. It is often found with a fossil as a ‘nucleus’. The size ranges from approximately 1mm to more than 1 m, and concretions are generally monomineralic.

2. In pedology, the localized concentration of material, e.g. calcium carbonate or iron oxide, in the form of a nodule; such nodules are of various sizes, shapes, and colours.

concretion

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concretion (kŏn-kree-shŏn) n. a stony mass formed within such an organ as the kidney, especially the coating of an internal organ or a foreign body with calcium salts. See also calculus.

concretion

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concretion A localized concentration of material (e.g. calcium carbonate or iron oxide) in the form of a nodule of varying size, shape, or colour.

concretion

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concretion A localized concentration of material (e.g. calcium carbonate or iron oxide) in the form of a nodule of varying size, shape, or colour.

Concretion

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Concretion

a lump, nodule, or clot; a cohesion of particles.

Examples: concretion of ceremonial matters, 1634; of marine shells, 1796; of salt, 1697; of slime, 1626.