fiberglass

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fi·ber·glass / ˈfībərˌglas/ (Brit. fi·bre·glass) (also trademark Fi·ber·glas) • n. 1. a reinforced plastic material composed of glass fibers embedded in a resin matrix.2. a woollike mass of glass filaments, used in insulation.3. a textile fabric made from woven glass filaments.

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