"rockwool" meaning in English

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        "2": "rock",
        "3": "wool"
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      "expansion": "rock + wool",
      "name": "compound"
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  ],
  "etymology_text": "From rock + wool.",
  "forms": [
    {
      "form": "rockwools",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "rock wool",
      "tags": [
        "alternative"
      ]
    }
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      "expansion": "rockwool (countable and uncountable, plural rockwools)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "Inorganic material resembling fiber, used primarily for insulation and soundproofing."
      ],
      "id": "en-rockwool-en-noun-wDE1YnbR",
      "tags": [
        "countable",
        "uncountable"
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      "examples": [
        {
          "ref": "1997, George F. Van Patten, Alyssa F. Bust, Gardening Indoors with Cuttings:",
          "text": "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.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A horticultural growing medium made from natural ingredients, usually including basalt rock and chalk."
      ],
      "id": "en-rockwool-en-noun-2gX9E2Su",
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "rockwool"
}

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  "etymology_templates": [
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        "2": "rock",
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      },
      "expansion": "rock + wool",
      "name": "compound"
    }
  ],
  "etymology_text": "From rock + wool.",
  "forms": [
    {
      "form": "rockwools",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "rock wool",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "Inorganic material resembling fiber, used primarily for insulation and soundproofing."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    },
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      "examples": [
        {
          "ref": "1997, George F. Van Patten, Alyssa F. Bust, Gardening Indoors with Cuttings:",
          "text": "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.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A horticultural growing medium made from natural ingredients, usually including basalt rock and chalk."
      ],
      "tags": [
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        "uncountable"
      ]
    }
  ],
  "word": "rockwool"
}