glass wool


noun

spun glass similar to wool, used for insulation, filters, etc.

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Origin of glass wool

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for glass wool

British Dictionary definitions for glass wool

glass wool

noun

fine spun glass massed into a wool-like bulk, used in insulation, filtering, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012