"twin paradox" meaning in English

{
  "etymology_text": "From the thought experiment conducted by Albert Einstein, in which one of a pair of twins sets off in a spaceship on a trip at high speed, and due to the effects of relativity, his effective clock ticks slower than the twin who remains at home, not encountering relativistic effects, so that when the spacetraveller twin returns home to compare clocks, the spacetraveller will have experienced less elapsed time than the homebody, thus having aged less than the homebody twin and being younger.",
  "forms": [
    {
      "form": "twin paradoxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "twin paradox (plural twin paradoxes)",
      "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"
        },
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          "source": "w"
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        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Interstellar travel",
          "orig": "en:Interstellar travel",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Paradoxes",
          "orig": "en:Paradoxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Relativity",
          "orig": "en:Relativity",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The clock paradox."
      ],
      "id": "en-twin_paradox-en-noun-SW27Vhck",
      "links": [
        [
          "relativity",
          "relativity"
        ],
        [
          "clock paradox",
          "clock paradox"
        ]
      ],
      "qualifier": "relativity",
      "raw_glosses": [
        "(relativity) The clock paradox."
      ],
      "synonyms": [
        {
          "word": "twins paradox"
        }
      ],
      "wikipedia": [
        "Albert Einstein",
        "en:twin paradox"
      ]
    }
  ],
  "word": "twin paradox"
}

{
  "etymology_text": "From the thought experiment conducted by Albert Einstein, in which one of a pair of twins sets off in a spaceship on a trip at high speed, and due to the effects of relativity, his effective clock ticks slower than the twin who remains at home, not encountering relativistic effects, so that when the spacetraveller twin returns home to compare clocks, the spacetraveller will have experienced less elapsed time than the homebody, thus having aged less than the homebody twin and being younger.",
  "forms": [
    {
      "form": "twin paradoxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "twin paradox (plural twin paradoxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Interstellar travel",
        "en:Paradoxes",
        "en:Relativity",
        "en:Time"
      ],
      "glosses": [
        "The clock paradox."
      ],
      "links": [
        [
          "relativity",
          "relativity"
        ],
        [
          "clock paradox",
          "clock paradox"
        ]
      ],
      "qualifier": "relativity",
      "raw_glosses": [
        "(relativity) The clock paradox."
      ],
      "wikipedia": [
        "Albert Einstein",
        "en:twin paradox"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "twins paradox"
    }
  ],
  "word": "twin paradox"
}