"alternation of generations" meaning in English

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      "expansion": "alternation of generations (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "orig": "en:Biology",
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      "glosses": [
        "Synonym of metagenesis."
      ],
      "id": "en-alternation_of_generations-en-noun-PdHub42o",
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "metagenesis",
          "metagenesis#English"
        ]
      ],
      "raw_glosses": [
        "(biology) Synonym of metagenesis."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "metagenesis"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "biology",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "ca",
          "lang": "Catalan",
          "sense": "metagenesis",
          "tags": [
            "feminine"
          ],
          "word": "alternança de generacions"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "shìdàijiāotì",
          "sense": "metagenesis",
          "word": "世代交替"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "metagenesis",
          "tags": [
            "feminine"
          ],
          "word": "alternance de générations"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "metagenesis",
          "tags": [
            "feminine"
          ],
          "word": "alternancia de generaciones"
        },
        {
          "code": "tl",
          "lang": "Tagalog",
          "sense": "metagenesis",
          "word": "halinhinan ng salinhay"
        }
      ],
      "wikipedia": [
        "alternation of generations"
      ]
    }
  ],
  "word": "alternation of generations"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Synonym of metagenesis."
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          "biology",
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          "metagenesis",
          "metagenesis#English"
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        "(biology) Synonym of metagenesis."
      ],
      "synonyms": [
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          "word": "metagenesis"
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        "alternation of generations"
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  "translations": [
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "metagenesis",
      "tags": [
        "feminine"
      ],
      "word": "alternança de generacions"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "shìdàijiāotì",
      "sense": "metagenesis",
      "word": "世代交替"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "metagenesis",
      "tags": [
        "feminine"
      ],
      "word": "alternance de générations"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "metagenesis",
      "tags": [
        "feminine"
      ],
      "word": "alternancia de generaciones"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "metagenesis",
      "word": "halinhinan ng salinhay"
    }
  ],
  "word": "alternation of generations"
}