"氷河時代" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "氷河",
        "3": "時代",
        "t1": "glacier",
        "t2": "age",
        "tr1": "hyōga",
        "tr2": "jidai"
      },
      "expansion": "氷河 (hyōga, “glacier”) + 時代 (jidai, “age”)",
      "name": "com"
    },
    {
      "args": {
        "1": "zh",
        "2": "冰河期"
      },
      "expansion": "Chinese 冰河期 (bīnghéqī)",
      "name": "cog"
    },
    {
      "args": {
        "1": "ko",
        "2": "빙하기"
      },
      "expansion": "Korean 빙하기 (binghagi)",
      "name": "cog"
    },
    {
      "args": {
        "1": "vi",
        "2": "kỉ băng hà"
      },
      "expansion": "Vietnamese kỉ băng hà",
      "name": "cog"
    }
  ],
  "etymology_text": "From 氷河 (hyōga, “glacier”) + 時代 (jidai, “age”). Compare Chinese 冰河期 (bīnghéqī), Korean 빙하기 (binghagi), Vietnamese kỉ băng hà, all of which literally means “glacial age”.",
  "forms": [
    {
      "form": "氷河時代",
      "ruby": [
        [
          "氷",
          "ひょう"
        ],
        [
          "河",
          "が"
        ],
        [
          "時",
          "じ"
        ],
        [
          "代",
          "だい"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "hyōga jidai",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ひょうが じだい"
      },
      "expansion": "氷(ひょう)河(が)時(じ)代(だい) • (hyōga jidai)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Time",
          "orig": "ja:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "an ice age (period of glaciation at the poles)"
      ],
      "id": "en-氷河時代-ja-noun-ANkjWpSo",
      "links": [
        [
          "ice age",
          "ice age"
        ]
      ],
      "wikipedia": [
        "ja:氷河時代"
      ]
    }
  ],
  "sounds": [
    {
      "other": "ひょーがじだい"
    },
    {
      "ipa": "[ço̞ːɡa̠ d͡ʑida̠i]"
    }
  ],
  "word": "氷河時代"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "氷河",
        "3": "時代",
        "t1": "glacier",
        "t2": "age",
        "tr1": "hyōga",
        "tr2": "jidai"
      },
      "expansion": "氷河 (hyōga, “glacier”) + 時代 (jidai, “age”)",
      "name": "com"
    },
    {
      "args": {
        "1": "zh",
        "2": "冰河期"
      },
      "expansion": "Chinese 冰河期 (bīnghéqī)",
      "name": "cog"
    },
    {
      "args": {
        "1": "ko",
        "2": "빙하기"
      },
      "expansion": "Korean 빙하기 (binghagi)",
      "name": "cog"
    },
    {
      "args": {
        "1": "vi",
        "2": "kỉ băng hà"
      },
      "expansion": "Vietnamese kỉ băng hà",
      "name": "cog"
    }
  ],
  "etymology_text": "From 氷河 (hyōga, “glacier”) + 時代 (jidai, “age”). Compare Chinese 冰河期 (bīnghéqī), Korean 빙하기 (binghagi), Vietnamese kỉ băng hà, all of which literally means “glacial age”.",
  "forms": [
    {
      "form": "氷河時代",
      "ruby": [
        [
          "氷",
          "ひょう"
        ],
        [
          "河",
          "が"
        ],
        [
          "時",
          "じ"
        ],
        [
          "代",
          "だい"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "hyōga jidai",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ひょうが じだい"
      },
      "expansion": "氷(ひょう)河(が)時(じ)代(だい) • (hyōga jidai)",
      "name": "ja-noun"
    }
  ],
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  "lang_code": "ja",
  "pos": "noun",
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        "Japanese compound terms",
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        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with four Han script characters",
        "ja:Time"
      ],
      "glosses": [
        "an ice age (period of glaciation at the poles)"
      ],
      "links": [
        [
          "ice age",
          "ice age"
        ]
      ],
      "wikipedia": [
        "ja:氷河時代"
      ]
    }
  ],
  "sounds": [
    {
      "other": "ひょーがじだい"
    },
    {
      "ipa": "[ço̞ːɡa̠ d͡ʑida̠i]"
    }
  ],
  "word": "氷河時代"
}