Definition of concretion

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Concretion (n.) A rounded mass or nodule produced by an aggregation of the material around a center; as, the calcareous concretions common in beds of clay..

Lern More About Concretion

Lithic :: Lithic (a.) Pertaining to the formation of uric-acid concretions (stone) in the bladder and other parts of the body; as, lithic diathesis..
Concretional :: Concretional (a.) Concretionary.
Pearlstone :: Pearlstone (n.) A glassy volcanic rock of a grayish color and pearly luster, often having a spherulitic concretionary structure due to the curved cracks produced by contraction in cooling. See Illust. under Perlitic..
Concretion :: Concretion (n.) The process of concreting; the process of uniting or of becoming united, as particles of matter into a mass; solidification..
Concretive :: Concretive (a.) Promoting concretion.
Acinous :: Acinous (a.) Consisting of acini, or minute granular concretions; as, acinose or acinous glands..
Tabasheer :: Tabasheer (n.) A concretion in the joints of the bamboo, which consists largely or chiefly of pure silica. It is highly valued in the East Indies as a medicine for the cure of bilious vomitings, bloody flux, piles, and various other diseases..
Concreture :: Concreture (n.) A mass formed by concretion.
Travertine :: Travertine (n.) A white concretionary form of calcium carbonate, usually hard and semicrystalline. It is deposited from the water of springs or streams holding lime in solution. Extensive deposits exist at Tivoli, near Rome..
Calculous :: Calculous (a.) Of the nature of a calculus; like stone; gritty; as, a calculous concretion..
Concretion :: Concretion (n.) A mass or nodule of solid matter formed by growing together, by congelation, condensation, coagulation, induration, etc.; a clot; a lump; a calculus..
Eozoon :: Eozoon (n.) A peculiar structure found in the Archaean limestones of Canada and other regions. By some geologists it is believed to be a species of gigantic Foraminifera, but others consider it a concretion, without organic structure..
Hippolith :: Hippolith (n.) A concretion, or kind of bezoar, from the intestines of the horse..
Lithofellic :: Lithofellic (a.) Pertaining to, or designating, a crystalline, organic acid, resembling cholic acid, found in the biliary intestinal concretions (bezoar stones) common in certain species of antelope..
Dissolvent :: Dissolvent (n.) A remedy supposed capable of dissolving concretions in the body, such as calculi, tubercles, etc..
Septarium :: Septarium (n.) A flattened concretionary nodule, usually of limestone, intersected within by cracks which are often filled with calcite, barite, or other minerals..
Phlebolith :: Phlebolith (n.) A small calcareous concretion formed in a vein; a vein stone.
Pisolite :: Pisolite (n.) A variety of calcite, or calcium carbonate, consisting of aggregated globular concretions about the size of a pea; -- called also peastone, peagrit..
Cystolith :: Cystolith (n.) A concretion of mineral matter within a leaf or other part of a plant.
Pearl :: Pearl (n.) A shelly concretion, usually rounded, and having a brilliant luster, with varying tints, found in the mantle, or between the mantle and shell, of certain bivalve mollusks, especially in the pearl oysters and river mussels, and sometimes in certain univalves. It is usually due to a secretion of shelly substance around some irritating foreign particle. Its substance is the same as nacre, or mother-of-pearl. Pearls which are round, or nearly round, and of fine luster, are highly esteemed
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