ROCK WOOL


Meaning of ROCK WOOL in English

noun Date: circa 1909 mineral wool made by blowing a jet of steam through molten rock (as limestone or siliceous rock) or through slag and used chiefly for heat and sound insulation

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.