"tautochrone" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ταὐτός",
        "4": "",
        "5": "the same"
      },
      "expansion": "Ancient Greek ταὐτός (tautós, “the same”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek ταὐτός (tautós, “the same”) + χρόνος (khrónos, “time”).",
  "forms": [
    {
      "form": "tautochrones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tautochrone (plural tautochrones)",
      "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Curves",
          "orig": "en:Curves",
          "parents": [
            "Shapes",
            "Geometry",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "98 0 2",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "word": "tautochronous"
        }
      ],
      "examples": [
        {
          "text": "An inverted cycloid with its base horizontal is a tautochrone.",
          "type": "example"
        }
      ],
      "glosses": [
        "A curve, such that a heavy body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it may begin to fall."
      ],
      "id": "en-tautochrone-en-noun-CNkewCt8",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "curve",
          "curve"
        ],
        [
          "gravity",
          "gravity"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A curve, such that a heavy body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it may begin to fall."
      ],
      "synonyms": [
        {
          "word": "tautochrone curve"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "tautochrone"
}

{
  "categories": [
    "Pages with 2 entries"
  ],
  "derived": [
    {
      "word": "tautochronous"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ταὐτός",
        "4": "",
        "5": "the same"
      },
      "expansion": "Ancient Greek ταὐτός (tautós, “the same”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek ταὐτός (tautós, “the same”) + χρόνος (khrónos, “time”).",
  "forms": [
    {
      "form": "tautochrones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tautochrone (plural tautochrones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English nouns",
        "English terms derived from Ancient Greek",
        "English terms with usage examples",
        "Pages with 2 entries",
        "en:Curves",
        "en:Mathematics"
      ],
      "examples": [
        {
          "text": "An inverted cycloid with its base horizontal is a tautochrone.",
          "type": "example"
        }
      ],
      "glosses": [
        "A curve, such that a heavy body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it may begin to fall."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "curve",
          "curve"
        ],
        [
          "gravity",
          "gravity"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A curve, such that a heavy body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it may begin to fall."
      ],
      "synonyms": [
        {
          "word": "tautochrone curve"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "tautochrone"
}