"isochrone" meaning in English

{
  "etymology_text": "See iso- and chrono-.",
  "forms": [
    {
      "form": "isochrones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "isochrone (plural isochrones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0",
      "word": "isochronous"
    },
    {
      "_dis1": "0 0",
      "word": "isochron"
    }
  ],
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "isochrones of urban development, isochrones of equal travel time",
          "type": "example"
        },
        {
          "ref": "2013, Raymond S. Bradley, Paleoclimatology: Reconstructing Climates of the Quaternary, page 420:",
          "text": "Isopoll maps can be reinterpreted to show the migration of a particular genus or ecotone through time by isochrones (equal time lines).",
          "type": "quote"
        }
      ],
      "glosses": [
        "An isoline on a map or chart connecting points that have the same value for some time-related variable."
      ],
      "id": "en-isochrone-en-noun-ZYhfpp3h",
      "links": [
        [
          "isoline",
          "isoline"
        ],
        [
          "map",
          "map"
        ],
        [
          "chart",
          "chart"
        ],
        [
          "time",
          "time"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "44 56",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "36 64",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "39 61",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "43 57",
          "kind": "topical",
          "langcode": "en",
          "name": "Isolines",
          "orig": "en:Isolines",
          "parents": [
            "Cartography",
            "Meteorology",
            "Geography",
            "Atmosphere",
            "Earth sciences",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A semicubical parabola."
      ],
      "id": "en-isochrone-en-noun-nvPc4T7~",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "semicubical parabola",
          "semicubical parabola"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A semicubical parabola."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "wikipedia": [
    "Isochrone map"
  ],
  "word": "isochrone"
}

{
  "categories": [
    "English 3-syllable words",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "Pages with 2 entries",
    "Pages with entries",
    "en:Isolines"
  ],
  "etymology_text": "See iso- and chrono-.",
  "forms": [
    {
      "form": "isochrones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "isochrone (plural isochrones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "isochronous"
    },
    {
      "word": "isochron"
    }
  ],
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "isochrones of urban development, isochrones of equal travel time",
          "type": "example"
        },
        {
          "ref": "2013, Raymond S. Bradley, Paleoclimatology: Reconstructing Climates of the Quaternary, page 420:",
          "text": "Isopoll maps can be reinterpreted to show the migration of a particular genus or ecotone through time by isochrones (equal time lines).",
          "type": "quote"
        }
      ],
      "glosses": [
        "An isoline on a map or chart connecting points that have the same value for some time-related variable."
      ],
      "links": [
        [
          "isoline",
          "isoline"
        ],
        [
          "map",
          "map"
        ],
        [
          "chart",
          "chart"
        ],
        [
          "time",
          "time"
        ]
      ]
    },
    {
      "categories": [
        "en:Mathematics"
      ],
      "glosses": [
        "A semicubical parabola."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "semicubical parabola",
          "semicubical parabola"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A semicubical parabola."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "wikipedia": [
    "Isochrone map"
  ],
  "word": "isochrone"
}