"proemial" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "prohemyal"
      },
      "expansion": "Middle English prohemyal",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "ML.",
        "3": "proēmiālis"
      },
      "expansion": "Medieval Latin proēmiālis",
      "name": "der"
    }
  ],
  "etymology_text": "From Middle English prohemyal, from Medieval Latin proēmiālis.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "proemial (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Of or pertaining to a proem or proemium."
      ],
      "id": "en-proemial-en-adj-KJRQ4W~9",
      "links": [
        [
          "proem",
          "proem"
        ],
        [
          "proemium",
          "proemium"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "proemial"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "prohemyal"
      },
      "expansion": "Middle English prohemyal",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "ML.",
        "3": "proēmiālis"
      },
      "expansion": "Medieval Latin proēmiālis",
      "name": "der"
    }
  ],
  "etymology_text": "From Middle English prohemyal, from Medieval Latin proēmiālis.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "proemial (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms derived from Medieval Latin",
        "English terms derived from Middle English",
        "English terms inherited from Middle English",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Of or pertaining to a proem or proemium."
      ],
      "links": [
        [
          "proem",
          "proem"
        ],
        [
          "proemium",
          "proemium"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "proemial"
}