What ⋐ means
⋐ is the double subset. Unicode classifies it as a mathematical symbol and files it in the 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, U22D0. In HTML that is ⋐, and in CSS \22D0.
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 or find ⋐
- Search it as
- subset relation · subset with two curves · Subset LaTeX command
- Shows up in
- Anything that takes text · its shape is whatever your font draws
⋐\22D0\Subset in math mode and load \usepackage{amssymb} in the preamble.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.



