1

fiberglass

noun fi·ber·glass \ ˈfī-bər-ˌglas \
|Updated on: 12 Jul 2018

Definition of fiberglass

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

Recent Examples of fiberglass from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fiberglass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of fiberglass

1937

in the meaning defined at sense 1

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2

fiberglass

verb

Definition of fiberglass

fiberglassed; fiberglassing; fiberglasses
: to protect or repair by applying fiberglass

First Known Use of fiberglass

1967

in the meaning defined above

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FIBERGLASS Defined for English Language Learners

fiberglass

Definition of fiberglass for English Language Learners

  • : a light and strong material that is made from thin threads of glass and that is used in making various products


FIBERGLASS Defined for Kids

fiberglass

noun fi·ber·glass \ ˈfī-bər-ˌglas \

Definition of fiberglass for Students

: glass in the form of fibers used in various products (as filters and insulation)


Seen and Heard

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