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Pronunciation varies by accent · noun
Inorganic material resembling fiber, used primarily for insulation and soundproofing..
In 1985, rockwool was introduced to the United States as an alternative to conventional soil and other soilless mediums. Rockwool is made of thin fibers of volcanic rock or a combination of volcanic rock, limestone, and coke.
Use rock wool when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rock wool means Inorganic material resembling fiber, used primarily for insulation and soundproofing..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
In 1985, rockwool was introduced to the United States as an alternative to conventional soil and other soilless mediums. Rockwool is made of thin fibers of volcanic rock or a combination of volcanic rock, limestone, and coke.
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