Code point
U+207B
Glyph appearance depends on your fonts.
U+207B
Sm<super> 2212U+207B SUPERSCRIPT MINUS is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Superscripts and Subscripts block.
Choose the representation you need, then copy its value.
U+207B
8315
⁻
⁻
E2 81 BB
207B
0000207B
%E2%81%BB
\u207B
\u207B
\u207B
\207B