glass wool

noun

: glass fibers in a mass resembling wool and being used especially for thermal insulation and air filters

Examples of glass wool in a Sentence

Recent Examples on the Web One of them was completely enclosed within a hefty capsule of cork, coiled wire, glass wool, and steel, through which no electromagnetic radiation could pass; anyone living inside was completely cut off from the Earth’s magnetic field. Jo Marchant, Wired, 1 Sep. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'glass 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

1879, in the meaning defined above

Time Traveler
The first known use of glass wool was in 1879

Dictionary Entries Near glass wool

Cite this Entry

“Glass wool.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glass%20wool. Accessed 17 Jul. 2024.

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