Code point
U+25D0
Glyph appearance depends on your fonts.
U+25D0
SoU+25D0 CIRCLE WITH LEFT HALF BLACK is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Geometric Shapes block.
Choose the representation you need, then copy its value.
U+25D0
9680
◐
◐
E2 97 90
25D0
000025D0
%E2%97%90
\u25D0
\u25D0
\u25D0
\25D0