- An inorganic fibrous material that's produced by steam blasting and air conditioning molten glass or the same substance and it is made use of as an insulator and a filtering product. Also referred to as rock wool.
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- a light fibrous material utilized as an insulator
- a fibrous wool-like material, made by blowing a strong jet of air or vapor through melted slag. It's an undesirable conductor of heat.
Hypernym for "mineral wool"
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