fiberglass

1 of 2

noun

fi·​ber·​glass ˈfī-bər-ˌglas How to pronounce fiberglass (audio)
1
: glass in fibrous form used in making various products (such as glass wool for insulation)
2
: a composite structural material of plastic and fiberglass

fiberglass

2 of 2

verb

fiberglassed; fiberglassing; fiberglasses

transitive verb

: to protect or repair by applying fiberglass

Examples of fiberglass in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
The fiberglass dome at Tropicana Field was ripped to shreds by the hurricane’s winds, which immediately created doubt about the Rays playing home games there by the time the season begins next year. Scott Thompson, Fox News, 22 Oct. 2024 It’s used in the production of plastic, rubber, fiberglass and other structural materials. Joe Kottke, NBC News, 26 Sep. 2024
Verb
Many mattress manufacturers switched to fiberglass as an alternative. Anna Giorgi, Verywell Health, 3 Sep. 2024 Then fiberglass the exterior plywood panel seams. Andy Cochrane, Popular Mechanics, 2 Sep. 2021 See all Example Sentences for fiberglass 

Word History

First Known Use

Noun

1937, in the meaning defined at sense 1

Verb

1967, in the meaning defined above

Time Traveler
The first known use of fiberglass was in 1937

Dictionary Entries Near fiberglass

Cite this Entry

“Fiberglass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fiberglass. Accessed 17 Dec. 2024.

Kids Definition

fiberglass

noun
fi·​ber·​glass
-ˌglas
: glass in the form of fibers used in making various products (as yarn, insulation, or boats)

More from Merriam-Webster on fiberglass

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!