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.
Source: wiktionary
Rockwool
Synonyms for "rockwool" (1 found)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.