pyrrhotite

noun
pyr·​rho·​tite | \ ˈpir-ə-ˌtīt How to pronounce pyrrhotite (audio) \

Definition of pyrrhotite

: a bronze-colored mineral of metallic luster that consists of ferrous sulfide and is attracted by a magnet

Examples of pyrrhotite in a Sentence

Recent Examples on the Web The Hartford Courant reports tens of thousands of homes could be at risk of having a foundation fail because of an iron sulfide called pyrrhotite. USA TODAY, "Soccer seismology, lobster drop, battle ax defense: News from around our 50 states," 12 Nov. 2019 The material containing pyrrhotite has been traced to a Willington quarry used between 1983 and 2015 by a now-defunct concrete company. Washington Post, "In a state with crumbling home foundations, relief arrives," 29 July 2019 Many of those homes require repairs because a chemical known as pyrrhotite was used in the concrete when the homes were constructed, chiefly in eastern Connecticut. Christopher Keating, courant.com, "Relief for homeowners with crumbling foundations," 6 June 2019 According to a state report, a mineral known as pyrrhotite — used in the concrete aggregate for the foundations that are now crumbling — is partly to blame. Kathleen Mcwilliams, courant.com, "Ben Carson Says HUD Is Committed To Finding A Solution For Homeowners With Failing Foundations," 4 June 2018 The issue was traced to a quarry in Willington and a mineral — pyrrhotite — that causes the concrete to deteriorate. Russell Blair, courant.com, "From Marijuana To Tolls: Did Connecticut Lawmakers Pass These 14 Major Bills?," 10 May 2018 According to a state report, a mineral known as pyrrhotite — used in the concrete aggregate for the foundations that are now crumbling — is partly to blame. Kathleen Mcwilliams, courant.com, "Ben Carson Says HUD Is Committed To Finding A Solution For Homeowners With Failing Foundations," 4 June 2018 According to a state report, a mineral known as pyrrhotite — used in the concrete aggregate for the foundations that are now crumbling — is partly to blame. Kathleen Mcwilliams, courant.com, "Ben Carson Says HUD Is Committed To Finding A Solution For Homeowners With Failing Foundations," 4 June 2018 According to a state report, a mineral known as pyrrhotite — used in the concrete aggregate for the foundations that are now crumbling — is partly to blame. Kathleen Mcwilliams, courant.com, "Ben Carson Says HUD Is Committed To Finding A Solution For Homeowners With Failing Foundations," 4 June 2018

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

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First Known Use of pyrrhotite

1868, in the meaning defined above

History and Etymology for pyrrhotite

modification of German Pyrrhotin, from Greek pyrrhotēs redness, from pyrrhos red, from pyr fire — more at fire

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The first known use of pyrrhotite was in 1868

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Last Updated

23 Nov 2019

Cite this Entry

“Pyrrhotite.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/pyrrhotite. Accessed 8 December 2019.

More from Merriam-Webster on pyrrhotite

Rhyming Dictionary: Words that rhyme with pyrrhotite

Britannica.com: Encyclopedia article about pyrrhotite

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