concretion

noun

con·cre·tion | \ kän-ˈkrē-shən

, kən-\

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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Examples of concretion in a Sentence

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These small, mineral hematite-rich concretions are near Fram Crater, visited by NASA's Opportunity rover in April 2004. — Ashley Strickland, CNN, "Curiosity rover detects highest levels of methane on Mars," 24 June 2019 The bone fragment that was found at the site of the Whydah shipwreck was removed from a large concretion in February. — Emily Sweeney, BostonGlobe.com, "Human remains recovered in old shipwreck off Cape Cod do not belong to legendary pirate captain," 24 May 2018 Over 200 concretions have been located at the wreck site. — James Rogers, Fox News, "Pirate mystery solved: Human bone reveals its secrets," 25 May 2018 The concretion holding the remains is currently on display at the Whydah Pirate Museum in West Yarmouth. — Emily Sweeney, BostonGlobe.com, "Human remains recovered in old shipwreck off Cape Cod do not belong to legendary pirate captain," 24 May 2018 But gemologists traffic in precious pearls, and discard the rest with a pejorative classification: calcium-carbonate concretions. — Michael Lapointe, The Atlantic, "The Twisted Tale of the World’s Largest Pearl," 11 May 2018 As calcite is a somewhat soluble mineral, the concretions weather away, leaving the holes. — Bulletin Board, Twin Cities, "Sunday Bulletin Board: A goose in the air, mingling with the scent of skunk: It happens every spring!," 5 Mar. 2017 Most of the concretion that remains is in the interior, but even that is being peeled away to reveal gears, cranks, and some surprises—like a human tooth. — Arden Dier, Fox News, "Inside Civil War sub: gears, cranks--and a tooth," 9 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'concretion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.