What ⺆ means
It is the index form linked to 冂. A radical helps file Chinese characters: ⺆ is the supplement form for radical 13, while ⼌ is the older Kangxi-list form and 冂 is the ideograph.
The earliest known form of 冂 appears on late Shang bronzes. Shuowen Jiezi, an early Chinese dictionary, describes it as a distant boundary beyond a city, fields, and forest.
Don't confuse it with
2Questions people ask
1Why does ⺆ look different in some fonts?
A font may lack this symbol, show a missing-glyph box, or draw it differently from 冂; the text still contains ⺆.
How to type ⺆
Windows (Word)
Alt+XType 2E86, then Alt+X to get ⺆.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “cjk radical box”.
Linux
Ctrl+Shift+UType 2e86, then Enter or Space.
HTML
⺆CSS
\2E86Codes and encoding1 code points
HTML decimal
⺆
HTML hex
⺆
CSS content
content: "\2E86";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%BA%86
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.