mineralfiber
nounUK /ˈmɪnərəl ˈfaɪbə/
US /ˈmɪnərəl ˈfaɪbər/
Mineral fiber is a tiny thread made from rock or glass.
The insulation in the attic is made of mineral fiber.
OTHER MEANINGS
2. A manufactured fiber made from molten rock, slag, or glass, used for heat and sound insulation.
Workers wore masks while installing mineral fiber panels.
3. A natural fibrous mineral substance, such as asbestos, found in rock formations.
Geologists studied the mineral fiber deposits in the cave.
4. A fire-resistant material woven from mineral fibers for protective clothing.
The firefighter's suit was lined with mineral fiber.