Code point
U+2A03
Glyph appearance depends on your fonts.
U+2A03
SmU+2A03 N-ARY UNION OPERATOR WITH DOT is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Supplemental Mathematical Operators block.
Choose the representation you need, then copy its value.
U+2A03
10755
⨃
⨃
E2 A8 83
2A03
00002A03
%E2%A8%83
\u2A03
\u2A03
\u2A03
\2A03