"præfixum" meaning in English

{
  "forms": [
    {
      "form": "præfixa",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "præfixa"
      },
      "expansion": "præfixum (plural præfixa)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "prefixum"
        }
      ],
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1819, Johann David Michaelis, Herbert Marsh, Introduction to the New Testament, page 393:",
          "text": "In the place to which our author refers, he takes notice of the frequent repetition of the Vau præfixum in Arabic, as well as in Hebrew.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Obsolete form of prefixum."
      ],
      "id": "en-præfixum-en-noun-kPMdGITj",
      "links": [
        [
          "prefixum",
          "prefixum#English"
        ]
      ],
      "tags": [
        "alt-of",
        "obsolete"
      ]
    }
  ],
  "word": "præfixum"
}

{
  "forms": [
    {
      "form": "præfixa",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "præfixa"
      },
      "expansion": "præfixum (plural præfixa)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "prefixum"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English nouns with irregular plurals",
        "English obsolete forms",
        "English terms spelled with Æ",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1819, Johann David Michaelis, Herbert Marsh, Introduction to the New Testament, page 393:",
          "text": "In the place to which our author refers, he takes notice of the frequent repetition of the Vau præfixum in Arabic, as well as in Hebrew.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Obsolete form of prefixum."
      ],
      "links": [
        [
          "prefixum",
          "prefixum#English"
        ]
      ],
      "tags": [
        "alt-of",
        "obsolete"
      ]
    }
  ],
  "word": "præfixum"
}