• synonyms

glass wool

  1. 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. 2018

Examples from the Web for glass wool

Historical Examples of glass wool

  • The gas loses its conductivity when filtered through a plug of glass-wool, or when it is made to bubble through water.

    Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8


British Dictionary definitions for glass wool

glass wool

  1. fine spun glass massed into a wool-like bulk, used in insulation, filtering, etc
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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