pre·​preg ˌprē-ˈpreg How to pronounce prepreg (audio)
: a reinforcing or molding material (such as paper or glass cloth) already impregnated with a synthetic resin

Examples of prepreg in a Sentence

Recent Examples on the Web The custom cruiser will be built in advanced composites with prepreg materials and a foam core. Rachel Cormack, Robb Report, 14 Nov. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'prepreg.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


pre- + impregnated

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of prepreg was in 1954

Dictionary Entries Near prepreg

Cite this Entry

“Prepreg.” Dictionary, Merriam-Webster, Accessed 10 Dec. 2023.

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