mineral wool


: any of various lightweight vitreous fibrous materials used especially in heat and sound insulation

Example Sentences

Recent Examples on the Web In most attics, that involves sealing all air leaks in the attic floor — including hard-to-reach ones behind chimneys, knee walls, and dormers — and laying down a thick layer of mineral wool or cellulose insulation. Jon Gorey, BostonGlobe.com, 12 June 2022 But that would require more layers of drywall, adding to costs, so Skender is sticking with its original plan while seeking more suppliers of mineral wool, said Andy Halik, a company vice president. Lydia O’neal, WSJ, 6 Oct. 2021 It can be effectively blown over existing insulation and is available in fiberglass, cellulose, and mineral wool. Timothy Dahl, Popular Mechanics, 13 Jan. 2019

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

Word History

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of mineral wool was in 1870

Dictionary Entries Near mineral wool

Cite this Entry

“Mineral wool.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mineral%20wool. Accessed 30 Nov. 2022.

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