"middle initial" meaning in English

{
  "forms": [
    {
      "form": "middle initials",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "middle initial (plural middle initials)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "An abbreviated middle name."
      ],
      "id": "en-middle_initial-en-noun-UzlSz8z4",
      "links": [
        [
          "middle name",
          "middle name"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Philippine English",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "31 69",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "16 84",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "15 85",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              35,
              37
            ],
            [
              74,
              83
            ]
          ],
          "text": "My full name is Ma. Clara Teresita R. dela Cruz. My mother's last name is Rodriguez.",
          "type": "example"
        }
      ],
      "glosses": [
        "The abbreviated form of the last name of one's mother."
      ],
      "id": "en-middle_initial-en-noun-LFGAZ5Yg",
      "links": [
        [
          "last name",
          "last name"
        ]
      ],
      "raw_glosses": [
        "(Philippines, by extension) The abbreviated form of the last name of one's mother."
      ],
      "tags": [
        "Philippines",
        "broadly"
      ]
    }
  ],
  "word": "middle initial"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "middle initials",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "middle initial (plural middle initials)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "An abbreviated middle name."
      ],
      "links": [
        [
          "middle name",
          "middle name"
        ]
      ]
    },
    {
      "categories": [
        "English terms with usage examples",
        "Philippine English"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              35,
              37
            ],
            [
              74,
              83
            ]
          ],
          "text": "My full name is Ma. Clara Teresita R. dela Cruz. My mother's last name is Rodriguez.",
          "type": "example"
        }
      ],
      "glosses": [
        "The abbreviated form of the last name of one's mother."
      ],
      "links": [
        [
          "last name",
          "last name"
        ]
      ],
      "raw_glosses": [
        "(Philippines, by extension) The abbreviated form of the last name of one's mother."
      ],
      "tags": [
        "Philippines",
        "broadly"
      ]
    }
  ],
  "word": "middle initial"
}