What ⧭ means
Look to the surrounding notation for its rule.
The Unicode 18.0 names list describes the shape but gives no formula rule. A down arrow may suggest “decrease,” but that reading does not follow from the character alone. Check the formula’s definition or ask its author.
Don't confuse it with
4⧪⧬⦪⦫
Black Diamond With Down Arrow
shares “arrow”, “black”, “down”
White Circle With Down Arrow
shares “arrow”, “circle”, “down”
Measured Angle With Open Arm Ending In Arrow Pointing Down And Right
shares “arrow”, “down”
Measured Angle With Open Arm Ending In Arrow Pointing Down And Left
shares “arrow”, “down”
Questions people ask
1Does ⧭ mean “decrease”?
No. The down arrow alone does not tell you how a quantity changes. Use the meaning defined in the formula where you found it.
How to type ⧭
Windows (Word)
Alt+XType 29ED, 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 “black circle with down arrow”.
Linux
Ctrl+Shift+UType 29ed, then Enter or Space.
HTML
⧭CSS
\29EDLaTeX with XCharter Math
The LaTeX command for ⧭ in `unicode-math` with XCharter Math is `\blackcircledownarrow`.
Codes and encoding1 code points
HTML decimal
⧭
HTML hex
⧭
CSS content
content: "\29ED";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A7%AD
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.