modacrylic fiber

noun
mod·​acryl·​ic fiber | \ˌmä-də-ˈkri-lik- \

Definition of modacrylic fiber 

: any of various synthetic textile fibers that are long-chain polymers composed of 35 to 85 percent by weight of acrylonitrile units

First Known Use of modacrylic fiber

1960, in the meaning defined above

History and Etymology for modacrylic fiber

modified acrylic

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The first known use of modacrylic fiber was in 1960

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