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

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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

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.

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The first known use of mineral wool was in 1870

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