"underdot" meaning in English

{
  "antonyms": [
    {
      "word": "overdot"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "dot"
      },
      "expansion": "under- + dot",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + dot",
  "forms": [
    {
      "form": "underdots",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underdot (plural underdots)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with under-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Diacritical marks",
          "orig": "en:Diacritical marks",
          "parents": [
            "Letters, symbols, and punctuation",
            "Symbols",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "a with underdot = ạ",
          "type": "example"
        }
      ],
      "glosses": [
        "A dot placed below a letter, as a diacritical mark."
      ],
      "hypernyms": [
        {
          "word": "dot"
        }
      ],
      "id": "en-underdot-en-noun-3GQNT2aO",
      "links": [
        [
          "dot",
          "dot"
        ],
        [
          "below",
          "below"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "diacritical mark",
          "diacritical mark"
        ]
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "diacritical mark",
          "tags": [
            "masculine"
          ],
          "word": "point souscrit"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "diacritical mark",
          "word": "alsó pont"
        },
        {
          "code": "pa",
          "lang": "Punjabi",
          "roman": "nuktā",
          "sense": "diacritical mark",
          "tags": [
            "masculine"
          ],
          "word": "ਨੁਕਤਾ"
        },
        {
          "code": "vi",
          "lang": "Vietnamese",
          "sense": "diacritical mark",
          "word": "dấu nặng"
        }
      ]
    }
  ],
  "word": "underdot"
}

{
  "antonyms": [
    {
      "word": "overdot"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "dot"
      },
      "expansion": "under- + dot",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + dot",
  "forms": [
    {
      "form": "underdots",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underdot (plural underdots)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "dot"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English nouns",
        "English terms prefixed with under-",
        "English terms with usage examples",
        "en:Diacritical marks"
      ],
      "examples": [
        {
          "text": "a with underdot = ạ",
          "type": "example"
        }
      ],
      "glosses": [
        "A dot placed below a letter, as a diacritical mark."
      ],
      "links": [
        [
          "dot",
          "dot"
        ],
        [
          "below",
          "below"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "diacritical mark",
          "diacritical mark"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "diacritical mark",
      "tags": [
        "masculine"
      ],
      "word": "point souscrit"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "diacritical mark",
      "word": "alsó pont"
    },
    {
      "code": "pa",
      "lang": "Punjabi",
      "roman": "nuktā",
      "sense": "diacritical mark",
      "tags": [
        "masculine"
      ],
      "word": "ਨੁਕਤਾ"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "sense": "diacritical mark",
      "word": "dấu nặng"
    }
  ],
  "word": "underdot"
}