What 異 means
Text normalization—software’s process for standardizing written text—maps it to 異.
Taiwan’s CNS 11643 records this form at 6-4B56 in plane 6. Unicode keeps that legacy mapping so text can travel to and from the older standard without losing its source entry.
To preserve the exact glyph through normalization, use the standardized variation sequence 異︁ (異 plus UFE01, an invisible selector for this glyph).
Who writes 異
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Questions people ask
1Why does 異 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type or find 異
- Search it as
- cns 11643 · 6-4b56 · 異 · 異 variant · compatibility ideograph · unicode normalization
- Shows up in
- Anything that takes text · its shape is whatever your font draws
異\2F938Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

