What ㎬ means
It means GPa: a gigapascal, the unit of pressure.
The square frame gives this Latin unit abbreviation one full character slot alongside Chinese, Japanese, and Korean text. It preserves spacing; it does not mark a different measurement.
Korean legacy encoding tables include this entry. In 2006, a Unicode standards document corrected its printed reference form toward mixed-case GPa. For ordinary modern text, write GPa.
Technical and archival; it preserves a compact unit form rather than adding conversational tone.
GPa is the pressure unit; in English academic use, GPA means grade point average.
Don't confuse it with
1Questions people ask
1Why does ㎬ 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 ㎬
㎬\33ACCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.
