(⊄) not a subset symbol, copy and paste:
- Name: Not a Subset Of;
- Unicode number: U+2284;
- HTML-code:
⊄; - CSS-code: \2284;
- Entity:
⊄; - Block: Mathematical Operators;
- Unicode version: 1.1 (1993);

(⊄) not a subset symbol, copy and paste:
⊄ ; ⊄ ;