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mineral wool

noun

Definition of 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

 It can be effectively blown over existing insulation and is available in fiberglass, cellulose, and mineral wool. — Timothy Dahl, Popular Mechanics, "How to Choose the Attic Insulation Your Home Needs," 13 Jan. 2019

First Known Use of mineral wool

1870, in the meaning defined above

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