"anoxic event" meaning in English

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      "expansion": "anoxic + event",
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  ],
  "etymology_text": "From anoxic + event.",
  "forms": [
    {
      "form": "anoxic events",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "anoxic event (plural anoxic events)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "langcode": "en",
          "name": "Oxygen",
          "orig": "en:Oxygen",
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            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
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        }
      ],
      "glosses": [
        "A period of time (e.g. in Earth's history) when large expanses of ocean are depleted of dissolved oxygen."
      ],
      "id": "en-anoxic_event-en-noun-GhipAspx"
    }
  ],
  "word": "anoxic event"
}

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    {
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        "2": "anoxic",
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      "expansion": "anoxic + event",
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    }
  ],
  "etymology_text": "From anoxic + event.",
  "forms": [
    {
      "form": "anoxic events",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "anoxic event (plural anoxic events)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Oxygen"
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      "glosses": [
        "A period of time (e.g. in Earth's history) when large expanses of ocean are depleted of dissolved oxygen."
      ]
    }
  ],
  "word": "anoxic event"
}