"heavier-than-air" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "+"
      },
      "expansion": "heavier-than-air (comparative form only)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "55 45",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1914, Victor Appleton, chapter 1, in Tom Swift And His Photo Telephone",
          "text": "And folks laughed at Santos Dumont, at the Wrights, and at all the other fellows, who said they could take a heavier-than-air machine, and skim above the clouds like a bird.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Weighing more than the volume of air which it displaces."
      ],
      "id": "en-heavier-than-air-en-adj-0~Ak6eHh",
      "links": [
        [
          "aircraft",
          "aircraft"
        ],
        [
          "Weighing",
          "weigh"
        ],
        [
          "volume",
          "volume"
        ],
        [
          "air",
          "air"
        ],
        [
          "displace",
          "displace"
        ]
      ],
      "raw_glosses": [
        "(of an aircraft) Weighing more than the volume of air which it displaces."
      ],
      "raw_tags": [
        "of an aircraft"
      ],
      "tags": [
        "comparative-only"
      ]
    },
    {
      "categories": [
        {
          "_dis": "55 45",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "33 67",
          "kind": "topical",
          "langcode": "en",
          "name": "Aviation",
          "orig": "en:Aviation",
          "parents": [
            "Aeronautics",
            "Transport",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1952 March 10, “Milestones”, in Time",
          "text": "Died. John Thomas Moore, 65, who, on a windy day in December 1903, lent a hand putting a flying machine on a runway, was the last surviving witness to the Wright brothers' historic first heavier-than-air flight at Kitty Hawk.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Of, pertaining to, or using an aircraft which weighs more than the volume of air it displaces."
      ],
      "id": "en-heavier-than-air-en-adj-HyU2anLU",
      "tags": [
        "comparative-only"
      ]
    }
  ],
  "word": "heavier-than-air"
}

{
  "categories": [
    "English adjectives",
    "English comparative-only adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "en:Aviation"
  ],
  "head_templates": [
    {
      "args": {
        "1": "+"
      },
      "expansion": "heavier-than-air (comparative form only)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1914, Victor Appleton, chapter 1, in Tom Swift And His Photo Telephone",
          "text": "And folks laughed at Santos Dumont, at the Wrights, and at all the other fellows, who said they could take a heavier-than-air machine, and skim above the clouds like a bird.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Weighing more than the volume of air which it displaces."
      ],
      "links": [
        [
          "aircraft",
          "aircraft"
        ],
        [
          "Weighing",
          "weigh"
        ],
        [
          "volume",
          "volume"
        ],
        [
          "air",
          "air"
        ],
        [
          "displace",
          "displace"
        ]
      ],
      "raw_glosses": [
        "(of an aircraft) Weighing more than the volume of air which it displaces."
      ],
      "raw_tags": [
        "of an aircraft"
      ],
      "tags": [
        "comparative-only"
      ]
    },
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1952 March 10, “Milestones”, in Time",
          "text": "Died. John Thomas Moore, 65, who, on a windy day in December 1903, lent a hand putting a flying machine on a runway, was the last surviving witness to the Wright brothers' historic first heavier-than-air flight at Kitty Hawk.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Of, pertaining to, or using an aircraft which weighs more than the volume of air it displaces."
      ],
      "tags": [
        "comparative-only"
      ]
    }
  ],
  "word": "heavier-than-air"
}