"zero-width" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "zero-width (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Zero",
          "orig": "en:Zero",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "zero-width space"
        },
        {
          "word": "ZWJ"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              4,
              14
            ],
            [
              295,
              305
            ]
          ],
          "ref": "2016 November 14, Rob Reed, “Everything You Need To Know About Emoji”, in Smashing Magazine, archived from the original on 12 Feb 2025:",
          "text": "The zero-width joiner (ZWJ) has a code point but no corresponding symbol. It is used to connect two or more other Unicode code points to create a new \"compound character\" with a unique glyph all its own. […] I'm making a point of mentioning Ninja Cat because it is another example of the use of zero-width joiners.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Adding no additional width to a line of text."
      ],
      "id": "en-zero-width-en-adj-vyPfLON5",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "additional",
          "additional"
        ],
        [
          "width",
          "width"
        ],
        [
          "line",
          "line"
        ]
      ],
      "raw_glosses": [
        "(computing, of a character) Adding no additional width to a line of text."
      ],
      "raw_tags": [
        "of a character"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "zero-width"
}

{
  "derived": [
    {
      "word": "zero-width space"
    },
    {
      "word": "ZWJ"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "zero-width (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 multiword terms",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Computing",
        "en:Zero"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              4,
              14
            ],
            [
              295,
              305
            ]
          ],
          "ref": "2016 November 14, Rob Reed, “Everything You Need To Know About Emoji”, in Smashing Magazine, archived from the original on 12 Feb 2025:",
          "text": "The zero-width joiner (ZWJ) has a code point but no corresponding symbol. It is used to connect two or more other Unicode code points to create a new \"compound character\" with a unique glyph all its own. […] I'm making a point of mentioning Ninja Cat because it is another example of the use of zero-width joiners.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Adding no additional width to a line of text."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "additional",
          "additional"
        ],
        [
          "width",
          "width"
        ],
        [
          "line",
          "line"
        ]
      ],
      "raw_glosses": [
        "(computing, of a character) Adding no additional width to a line of text."
      ],
      "raw_tags": [
        "of a character"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "zero-width"
}