What ⨪ means
⨪ is the minus sign with dot below. Unicode classifies it as a mathematical symbol and files it in the Supplemental Mathematical Operators block; this site shelves it under Maths.
Its appearance depends on the font and text styling.
How it is encoded
⨪ is a single code point, U+2A2A. In HTML that is ⨪, and in CSS \2A2A.
Don't confuse it with
4Questions 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 ⨪
Windows (Word)
Alt+XType 2A2A, then Alt+X to get ⨪.
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 “minus sign with dot below”.
Linux
Ctrl+Shift+UType 2a2a, then Enter or Space.
HTML
⨪CSS
\2A2ATeX (XCharter math font)
In the XCharter math-font setup, use the command `\minusdot`.
HTML
Use the named character reference `⨪` in HTML.
Codes and encoding1 code points
HTML decimal
⨪
HTML hex
⨪
CSS content
content: "\2A2A";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A8%AA
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.