mineral wool


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

Examples of mineral wool in a Sentence

Recent Examples on the Web Instead of using traditional fiberglass insulation in the walls, use Rockwool, also referred to as mineral wool. Joseph Truini, Popular Mechanics, 31 May 2023 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 examples are programmatically compiled from various online sources to illustrate current usage of the word 'mineral wool.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 25 May. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!