Dictionary
Words, grammatical forms and meanings linked to the ontology.
zero-width en · ADJ
Meanings
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(not-comparable, of a character) Adding no additional width to a line of 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.
2016 November 14, Rob Reed, “Everything You Need To Know About Emoji”, in Smashing Magazine, archived from the original on 12 Feb 2025:
Deriveds
ZWJ · zero-width space