What ⋄ means
The notation defines the operation. A binary operator sits between two inputs, as in p ⋄ q. LaTeX's \diamond command provides this operator. MathML, a format for computer-written mathematics, treats ⋄ as an infix operator: it sits between its inputs.
The possibility sign has a separate history: the logician C. I. Lewis developed modal logic across 1918, 1920, and 1932. Those milestones belong to modal notation, not to ⋄.
Technical notation, with meaning set by the mathematical system.
Check the definition before reading ⋄ as possibility.
Part of the collection
Don't confuse it with
3
Related characters
1
Combination ideas
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.
More like this
12
Collections with ⋄
2
How to type or find ⋄
- Search it as
- math diamond symbol · diamond in formulas · LaTeX diamond · binary operator · modal diamond
- Shows up in
- Anything that takes text · its shape is whatever your font draws
⋄\22C4\diamond to produce this binary operator.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.