Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

glass wool

noun

Definition of glass wool

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



1879

First Known Use of glass wool

1879


Learn More about glass wool


Seen and Heard

What made you want to look up glass wool? Please tell us where you read or heard it (including the quote, if possible).