Definition of concretion
1
: something concreted: such as
a
: a hard usually inorganic mass (such as a bezoar or tophus) formed in a living body
b
: a mass of mineral matter found generally in rock of a composition different from its own and produced by deposition from aqueous solution in the rock
2
: the act or process of concreting : the state of being concreted
concretion of ideas in a hypothesis
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Merriam-Webster unabridged
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Time Traveler for concretion
The first known use of concretion was in 1541
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