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fibreglass noun

  /ˈfaɪbəɡlɑːs/
  • A composite material made from fine fibres of spun glass held together with resin.
Fiberglas, GFK, Glasfaserverstärkter Kunststoff
  • Silica based glass extruded into fibers that possess a length at least 1000 times greater than their width.
Glasfaser, Glasfasern
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