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modacrylic fiber

[mod-uh-kril-ik, mod-]
noun
  1. any of various synthetic copolymer textile fibers, as Dynel, containing less than 85 percent but more than 35 percent of acrylonitrile.
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Origin of modacrylic fiber

1955–60; mod(ified) + acrylic
Also called mod·a·cryl·ic.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018