cor·​di·​er·​ite ˈkȯr-dē-ə-ˌrīt How to pronounce cordierite (audio)
: a blue mineral of vitreous luster and strong dichroism that consists of a silicate of aluminum, iron, and magnesium

Example Sentences

Recent Examples on the Web That said, since cordierite is porous, like cast iron, it should never be washed with soap. Rebecca Norris, Peoplemag, 14 Feb. 2023 Our best budget pick, the Unicook Heavy Duty Cordierite Pizza Stone, is perfect for pizza making beginners because of its rectangular shape and durable cordierite surface. Tanya Edwards, Better Homes & Gardens, 14 Dec. 2022 The PizzaQue uses a 14-inch cordierite pizza stone and propane gas to make a crispy pizza in six minutes. Billy Cadden, Popular Science, 24 May 2018 Multiple translucent crystals fit the bill, namely calcite, cordierite and tourmaline. Steph Yin, New York Times, 6 Apr. 2018 No calcite, cordierite, or tourmaline crystal has turned up at a Viking archaeological site so far. Kiona N. Smith, Ars Technica, 6 Apr. 2018 All three types of crystals that the team studied—calcite, a form of calcium carbonate; cordierite, an iron- and magnesium-rich silicate; and tourmaline, a boron-rich silicate—worked well at intervals of 3 hours or less. Sid Perkins, Science | AAAS, 3 Apr. 2018 See More

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

Word History


French, from Pierre L. A. Cordier †1861 French geologist

First Known Use

circa 1814, in the meaning defined above

Time Traveler
The first known use of cordierite was circa 1814

Dictionary Entries Near cordierite

Cite this Entry

“Cordierite.” Dictionary, Merriam-Webster, Accessed 26 Mar. 2023.

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