"prefatorily" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefatory",
        "3": "ly"
      },
      "expansion": "prefatory + -ly",
      "name": "suffix"
    }
  ],
  "etymology_text": "From prefatory + -ly.",
  "forms": [
    {
      "form": "more prefatorily",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most prefatorily",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prefatorily (comparative more prefatorily, superlative most prefatorily)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ly",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "In a prefatory manner; by way of preface."
      ],
      "id": "en-prefatorily-en-adv-xmrz8jqn",
      "links": [
        [
          "prefatory",
          "prefatory"
        ],
        [
          "preface",
          "preface"
        ]
      ]
    }
  ],
  "word": "prefatorily"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefatory",
        "3": "ly"
      },
      "expansion": "prefatory + -ly",
      "name": "suffix"
    }
  ],
  "etymology_text": "From prefatory + -ly.",
  "forms": [
    {
      "form": "more prefatorily",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most prefatorily",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prefatorily (comparative more prefatorily, superlative most prefatorily)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms suffixed with -ly",
        "Pages with 1 entry"
      ],
      "glosses": [
        "In a prefatory manner; by way of preface."
      ],
      "links": [
        [
          "prefatory",
          "prefatory"
        ],
        [
          "preface",
          "preface"
        ]
      ]
    }
  ],
  "word": "prefatorily"
}