"absolute altitude" meaning in English

{
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      "form": "absolute altitudes",
      "tags": [
        "plural"
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      "expansion": "absolute altitude (countable and uncountable, plural absolute altitudes)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aviation",
          "orig": "en:Aviation",
          "parents": [
            "Aeronautics",
            "Transport",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "The vertical distance between the airplane and the surface below."
      ],
      "id": "en-absolute_altitude-en-noun-Y6RG9meY",
      "links": [
        [
          "aviation",
          "aviation"
        ]
      ],
      "raw_glosses": [
        "(aviation) The vertical distance between the airplane and the surface below."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "aviation",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "vertical distance",
          "tags": [
            "masculine"
          ],
          "word": "absolute hoogte"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "vertical distance",
          "word": "lentokorkeus maanpinnasta"
        }
      ]
    }
  ],
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      "ipa": "/ˈæb.səˌlut/",
      "tags": [
        "US"
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      "ipa": "/ˌæb.səˈljut/",
      "tags": [
        "US"
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    },
    {
      "ipa": "/ˈæl.tɪˌtud/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈæl.tɪˌtjud/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "absolute altitude"
}

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    {
      "form": "absolute altitudes",
      "tags": [
        "plural"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "The vertical distance between the airplane and the surface below."
      ],
      "links": [
        [
          "aviation",
          "aviation"
        ]
      ],
      "raw_glosses": [
        "(aviation) The vertical distance between the airplane and the surface below."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "aviation",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
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      "ipa": "/ˈæb.səˌlut/",
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    {
      "ipa": "/ˌæb.səˈljut/",
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      "ipa": "/ˈæl.tɪˌtud/",
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      "ipa": "/ˈæl.tɪˌtjud/",
      "tags": [
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  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "vertical distance",
      "tags": [
        "masculine"
      ],
      "word": "absolute hoogte"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "vertical distance",
      "word": "lentokorkeus maanpinnasta"
    }
  ],
  "word": "absolute altitude"
}