An Encylopedia Britannica Company

fiberglass

1 ENTRIES FOUND:
fiberglass (US) noun
or British fibreglass /ˈfaɪbɚˌglæs/ Brit /ˈfaɪbəˌglɑːs/
fiberglass (US)
noun
or British fibreglass /ˈfaɪbɚˌglæs/ Brit /ˈfaɪbəˌglɑːs/
Britannica Dictionary definition of FIBERGLASS
[noncount]
: a light and strong material that is made from thin threads of glass and that is used in making various products often used before another noun