"fission rocket" meaning in English

{
  "forms": [
    {
      "form": "fission rockets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fission rocket (plural fission rockets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "50 50",
      "word": "nuclear rocket"
    },
    {
      "_dis1": "50 50",
      "word": "fusion rocket"
    },
    {
      "_dis1": "50 50",
      "word": "Bussard ramjet"
    },
    {
      "_dis1": "50 50",
      "word": "nuclear-electric rocket"
    },
    {
      "_dis1": "50 50",
      "word": "nuclear-thermal rocket"
    },
    {
      "_dis1": "50 50",
      "word": "nuclear-thermoelectric rocket"
    },
    {
      "_dis1": "50 50",
      "word": "pulse rocket"
    },
    {
      "_dis1": "50 50",
      "word": "anti-matter rocket"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Astronautics",
          "orig": "en:Astronautics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A spacecraft having a fission reactor that powers the rocket."
      ],
      "id": "en-fission_rocket-en-noun-M8ITX130",
      "links": [
        [
          "astronautics",
          "astronautics"
        ],
        [
          "spacecraft",
          "spacecraft"
        ],
        [
          "fission reactor",
          "fission reactor"
        ],
        [
          "rocket",
          "rocket"
        ]
      ],
      "raw_glosses": [
        "(astronautics) A spacecraft having a fission reactor that powers the rocket."
      ],
      "topics": [
        "aerospace",
        "astronautics",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Astronautics",
          "orig": "en:Astronautics",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "18 82",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "14 86",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "14 86",
          "kind": "other",
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          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "langcode": "en",
          "name": "Nuclear rocketry",
          "orig": "en:Nuclear rocketry",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A nuclear-pulse rocket that uses fission-based atomic bombs to supply propulsive force."
      ],
      "id": "en-fission_rocket-en-noun-49z-WaQU",
      "links": [
        [
          "astronautics",
          "astronautics"
        ],
        [
          "nuclear-pulse rocket",
          "nuclear-pulse rocket"
        ],
        [
          "atomic bomb",
          "atomic bomb"
        ]
      ],
      "raw_glosses": [
        "(astronautics) A nuclear-pulse rocket that uses fission-based atomic bombs to supply propulsive force."
      ],
      "topics": [
        "aerospace",
        "astronautics",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "fission rocket"
}

{
  "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:Nuclear rocketry"
  ],
  "forms": [
    {
      "form": "fission rockets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "fission rocket (plural fission rockets)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "nuclear rocket"
    },
    {
      "word": "fusion rocket"
    },
    {
      "word": "Bussard ramjet"
    },
    {
      "word": "nuclear-electric rocket"
    },
    {
      "word": "nuclear-thermal rocket"
    },
    {
      "word": "nuclear-thermoelectric rocket"
    },
    {
      "word": "pulse rocket"
    },
    {
      "word": "anti-matter rocket"
    }
  ],
  "senses": [
    {
      "categories": [
        "en:Astronautics"
      ],
      "glosses": [
        "A spacecraft having a fission reactor that powers the rocket."
      ],
      "links": [
        [
          "astronautics",
          "astronautics"
        ],
        [
          "spacecraft",
          "spacecraft"
        ],
        [
          "fission reactor",
          "fission reactor"
        ],
        [
          "rocket",
          "rocket"
        ]
      ],
      "raw_glosses": [
        "(astronautics) A spacecraft having a fission reactor that powers the rocket."
      ],
      "topics": [
        "aerospace",
        "astronautics",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [
        "en:Astronautics"
      ],
      "glosses": [
        "A nuclear-pulse rocket that uses fission-based atomic bombs to supply propulsive force."
      ],
      "links": [
        [
          "astronautics",
          "astronautics"
        ],
        [
          "nuclear-pulse rocket",
          "nuclear-pulse rocket"
        ],
        [
          "atomic bomb",
          "atomic bomb"
        ]
      ],
      "raw_glosses": [
        "(astronautics) A nuclear-pulse rocket that uses fission-based atomic bombs to supply propulsive force."
      ],
      "topics": [
        "aerospace",
        "astronautics",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "fission rocket"
}