"grapheme cluster" meaning in English

{
  "forms": [
    {
      "form": "grapheme clusters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grapheme cluster (plural grapheme clusters)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2007, Yannis Haralambous, Fonts & Encodings, O'Reilly, page 117",
          "text": "First, a bit of jargon: a grapheme cluster is a generalization of the notion of combining characters. A character is in itself a grapheme cluster. When we apply non-spacing or enclosing combining characters to it, we extend the cluster.",
          "type": "quotation"
        },
        {
          "ref": "[2017, Moritz Lenz, Perl 6 Fundamentals: A Primer with Examples, Projects, and Case Studies, Apress, page 115",
          "text": "Unicode calls such sequences of one base character and potentially several combining characters as a grapheme cluster. Strings in Perl 6 are based on these grapheme clusters.]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A combination of code points representing a single graphical unit."
      ],
      "id": "en-grapheme_cluster-en-noun-gD4LwcVL",
      "links": [
        [
          "Unicode",
          "Unicode"
        ],
        [
          "code point",
          "code point"
        ]
      ],
      "qualifier": "Unicode",
      "raw_glosses": [
        "(Unicode) A combination of code points representing a single graphical unit."
      ]
    }
  ],
  "word": "grapheme cluster"
}

{
  "forms": [
    {
      "form": "grapheme clusters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grapheme cluster (plural grapheme clusters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2007, Yannis Haralambous, Fonts & Encodings, O'Reilly, page 117",
          "text": "First, a bit of jargon: a grapheme cluster is a generalization of the notion of combining characters. A character is in itself a grapheme cluster. When we apply non-spacing or enclosing combining characters to it, we extend the cluster.",
          "type": "quotation"
        },
        {
          "ref": "[2017, Moritz Lenz, Perl 6 Fundamentals: A Primer with Examples, Projects, and Case Studies, Apress, page 115",
          "text": "Unicode calls such sequences of one base character and potentially several combining characters as a grapheme cluster. Strings in Perl 6 are based on these grapheme clusters.]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A combination of code points representing a single graphical unit."
      ],
      "links": [
        [
          "Unicode",
          "Unicode"
        ],
        [
          "code point",
          "code point"
        ]
      ],
      "qualifier": "Unicode",
      "raw_glosses": [
        "(Unicode) A combination of code points representing a single graphical unit."
      ]
    }
  ],
  "word": "grapheme cluster"
}