What ㍃ means
It stands for “micro-,” the metric prefix for one millionth.
Japanese writes micro as マイクロ in katakana, a syllabary; the square fits that word into one text cell.
Unicode 1.0 traces the set to corporate registries. Unicode Standard 17.0 calls these compatibility forms and recommends square styling for ordinary Katakana when supported.
㍃ or μ in a measurement?
Use μ before a unit in ordinary SI notation.
For example, write μm. Keep ㍃ when preserving an existing Japanese text source or its one-cell layout.
Questions people ask
1Why does ㍃ 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 ㍃
- Search it as
- ㍃ meaning · micro symbol · μ symbol · maikuro · マイクロ · 組文字 · くみもじ
- Shows up in
- Anything that takes text · its shape is whatever your font draws
Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.


