Definition of modacrylic in English:

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Pronunciation: /ˌmädəˈkrilik/


Relating to a synthetic textile fiber made from a polymer containing a high proportion of units derived from acrylonitrile.
Example sentences
  • Our modacrylic range has something for everyone and human hair and mohair wigs are our specialty.
  • Since modacrylic fibers are copolymerized with vinyl chloride or vinylidene chloride, they are flame retardant.
  • The low softening temperatures of modacrylic fibers allow them to be stretched, embossed and molded into special shapes.


A modacrylic textile fiber.
Example sentences
  • Most stuffed animals have an outer covering of fake fur, usually synthetic materials (polyester, acrylic or modacrylic) or natural materials (wool, wool/cotton, mohair, or alpaca).
  • And ‘Evolutionary Plastic’ and modacrylic are the first inherently flame-retardant synthetic fibers.
  • Finally, acrylic and modacrylic are the predominant fibers used in the fast-growing craft yarn market.


1950s: from modified (past participle of modify) + acrylic.

For editors and proofreaders

Syllabification: mod·a·cryl·ic

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