polyamide

American  

[pol-ee-am-ahyd, -id] / ˌpɒl iˈæm aɪd, -ɪd /

noun

Chemistry.

1. a polymer in which the monomer units are linked together by the amide group –CONH–.

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polyamide British  

/ -mɪd, ˌpɒlɪˈæmaɪd /

noun

1. any one of a class of synthetic polymeric materials containing recurring -CONH- groups See also nylon

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polyamide Scientific  

/ pŏl′ē-ăm′īd′ /

1. A polymer produced by the reaction of the amino group (NH ₂) from one molecule with the carboxylic acid group (CO ₂ H) from another molecule. The resulting structure is similar to that of a protein. Silk is a naturally occurring polyamide, and nylon is a synthetic polyamide.

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Etymology

Origin of polyamide

First recorded in 1925–30; poly- + amide

Example Sentences

However, PET was outnumbered by polyamide, a type of nylon.

From Science Daily • Jan. 8, 2024

Increasingly, however, marine snowfall is being infiltrated by microplastics: fibers and fragments of polyamide, polyethylene and polyethylene terephthalate.

From New York Times • Apr. 3, 2022

Dale has been excited about the company Evelyn & Bobbie, which combines the fabrics polyamide and elastane for lift support, no underwire necessary.

From Washington Post • Sep. 30, 2021

The company also announced that it would be changing the rocket's fuel from a rubber-based one to a plastic-based one called thermoplastic polyamide.

From BBC • Jul. 11, 2021

The frames are made from a nylon-based polyamide powder, which gives them sufficient durability for rough-and-tumble activities.

From Los Angeles Times • Sep. 17, 2019