"dust-free" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dust",
        "3": "-free"
      },
      "expansion": "dust + -free",
      "name": "af"
    }
  ],
  "etymology_text": "From dust + -free.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "dust-free"
      },
      "expansion": "dust-free (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "dustfree"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -free",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1962 October, M. J. Wilson, “Three years of dieselisation at Devons Road depot”, in Modern Railways, page 264:",
          "text": "Injector testing under pressure has never presented any difficulty. It is carried out in a small, dust-free cubicle fitted with an extractor fan and the meter calibration is checked annually.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of dustfree"
      ],
      "id": "en-dust-free-en-adj-NASBA0Ri",
      "links": [
        [
          "dustfree",
          "dustfree#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "not-comparable"
      ]
    }
  ],
  "word": "dust-free"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dust",
        "3": "-free"
      },
      "expansion": "dust + -free",
      "name": "af"
    }
  ],
  "etymology_text": "From dust + -free.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "dust-free"
      },
      "expansion": "dust-free (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "dustfree"
        }
      ],
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms suffixed with -free",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1962 October, M. J. Wilson, “Three years of dieselisation at Devons Road depot”, in Modern Railways, page 264:",
          "text": "Injector testing under pressure has never presented any difficulty. It is carried out in a small, dust-free cubicle fitted with an extractor fan and the meter calibration is checked annually.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of dustfree"
      ],
      "links": [
        [
          "dustfree",
          "dustfree#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "not-comparable"
      ]
    }
  ],
  "word": "dust-free"
}