"isogeotherm" meaning in English

{
  "forms": [
    {
      "form": "isogeotherms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "isogeotherm (plural isogeotherms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "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 prefixed with iso-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Isolines",
          "orig": "en:Isolines",
          "parents": [
            "Cartography",
            "Meteorology",
            "Geography",
            "Atmosphere",
            "Earth sciences",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A geoisotherm."
      ],
      "id": "en-isogeotherm-en-noun-8m1hYGEq",
      "links": [
        [
          "geoisotherm",
          "geoisotherm"
        ]
      ],
      "related": [
        {
          "word": "isogeothermic"
        }
      ]
    }
  ],
  "word": "isogeotherm"
}

{
  "forms": [
    {
      "form": "isogeotherms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "isogeotherm (plural isogeotherms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "isogeothermic"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with iso-",
        "en:Isolines"
      ],
      "glosses": [
        "A geoisotherm."
      ],
      "links": [
        [
          "geoisotherm",
          "geoisotherm"
        ]
      ]
    }
  ],
  "word": "isogeotherm"
}