fi·ber·glass
ˈfī-bər-ˌglas 
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
fiberglassed; fiberglassing; fiberglasses
: to protect or repair by applying fiberglass
Examples of fiberglass in a Sentence
Recent Examples on the Web
Nikki Dementri, CBS News, 7 Jan. 2026
At one point, the Port of Astoria dispatched a 32-foot fiberglass replica of sea lions’ primary predator, the orca, outfitted with real orca sounds, that almost immediately capsized.
—Katherine J. Wu, The Atlantic, 7 Jan. 2026
Melissa Repko, CNBC, 15 May 2025
Many mattress manufacturers switched to fiberglass as an alternative.
—Anna Giorgi, Verywell Health, 3 Sep. 2024
See All Example Sentences for fiberglass
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Noun
Folding tables were set up across the room, and on top of each one was a fiberglass bell.
—Nikki Dementri, CBS News, 7 Jan. 2026
At one point, the Port of Astoria dispatched a 32-foot fiberglass replica of sea lions’ primary predator, the orca, outfitted with real orca sounds, that almost immediately capsized.
—Katherine J. Wu, The Atlantic, 7 Jan. 2026
Verb
Suppliers have shifted from materials like aluminum, which faces tariffs, to fiberglass.
—Melissa Repko, CNBC, 15 May 2025
Many mattress manufacturers switched to fiberglass as an alternative.
—Anna Giorgi, Verywell Health, 3 Sep. 2024
See All Example Sentences for fiberglass
Cite this Entry
“Fiberglass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fiberglass. Accessed 15 Jan. 2026.
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