fiberglass

or fi·ber glass

[ fahy-ber-glas, -glahs ]

noun

1. a material consisting of extremely fine filaments of glass that are combined in yarn and woven into fabrics, used in masses as a thermal and acoustical insulator, or embedded in various resins to make boat hulls, fishing rods, and the like.

verb (used with object)

1. to cover or form with fiberglass.

verb (used without object)

1. to use or work with fiberglass.

fiberglass

/ fī′bər-glăs′ /

1. A material made up of very fine fibers of glass. Fiberglass is resistant to heat and fire and is used to make various products, such as building insulation and boat hulls. Because the fibers in fiberglass are capable of transmitting light around curves, fiberglass is an important component of fiber optics.

Word History and Origins

Origin of fiberglass¹

An Americanism dating back to 1935–40; fiber + glass

Example Sentences

The Harpoon is crafted in Never Summer’s ultra-durable construction, which includes a resilient sintered base and sidewalls, pre-tensioned fiberglass laminates, and best-in-class thermoplastic topsheets.

From Outside Online

I delivered monologues to my wife, Sarah, and my daughter over dinner about the pros and cons of aluminum versus fiberglass caps.

From Outside Online

They are sold in different lengths, depending on your needs, and can be made of flexible cloth, metal or fiberglass ribbon.

From Popular-Science

Leap also licensed a version of its app to Owens Corning, a multibillion- dollar manufacturer of fiberglass and roofing products based in Toledo.

From Washington Post

A crew of reality-TV dudes with beards and muscles landed in a helicopter, filmed themselves measuring the thing, used phones to record latitude and compass direction, then produced a fiberglass stepladder and snapped selfies perched on top.

From Outside Online

Buried three feet below the ground was a fiberglass box filled with human bones.

From The Daily Beast

Ethanol can wreak havoc on older boats, particularly ones with fiberglass fuel tanks.

From The Daily Beast

“Ivan Wilzig wears a cape and has this tacky castle made out of fiberglass,” says the pal.

From The Daily Beast

Well, there is a bench along, in front of, a fiberglass window panel.

From Project Gutenberg