"gestation period" meaning in English

{
  "forms": [
    {
      "form": "gestation periods",
      "tags": [
        "plural"
      ]
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      "args": {},
      "expansion": "gestation period (plural gestation periods)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
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          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
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            "Fundamental"
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        }
      ],
      "glosses": [
        "the average interval between fertilization and birth of a mammal; ranges from 13 days for the opossum to 626 days for the Indian elephant"
      ],
      "id": "en-gestation_period-en-noun-O2lYDS6b",
      "links": [
        [
          "average",
          "average"
        ],
        [
          "interval",
          "interval"
        ],
        [
          "fertilization",
          "fertilization"
        ],
        [
          "birth",
          "birth"
        ],
        [
          "mammal",
          "mammal"
        ],
        [
          "opossum",
          "opossum"
        ],
        [
          "Indian elephant",
          "Indian elephant"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "the average interval between fertilization and birth of a mammal",
          "word": "kantoaika"
        },
        {
          "code": "ga",
          "lang": "Irish",
          "sense": "the average interval between fertilization and birth of a mammal",
          "tags": [
            "feminine"
          ],
          "word": "tréimhse iompair"
        }
      ],
      "wikipedia": [
        "gestation period"
      ]
    }
  ],
  "word": "gestation period"
}

{
  "forms": [
    {
      "form": "gestation periods",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "gestation period (plural gestation periods)",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "the average interval between fertilization and birth of a mammal; ranges from 13 days for the opossum to 626 days for the Indian elephant"
      ],
      "links": [
        [
          "average",
          "average"
        ],
        [
          "interval",
          "interval"
        ],
        [
          "fertilization",
          "fertilization"
        ],
        [
          "birth",
          "birth"
        ],
        [
          "mammal",
          "mammal"
        ],
        [
          "opossum",
          "opossum"
        ],
        [
          "Indian elephant",
          "Indian elephant"
        ]
      ],
      "wikipedia": [
        "gestation period"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "the average interval between fertilization and birth of a mammal",
      "word": "kantoaika"
    },
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "the average interval between fertilization and birth of a mammal",
      "tags": [
        "feminine"
      ],
      "word": "tréimhse iompair"
    }
  ],
  "word": "gestation period"
}