U+229B "⊛" Circled Asterisk Operator Unicode Character

U+229B "⊛" Circled Asterisk Operator is a mathematical symbol representing an asterisk enclosed within a circle, primarily used to denote a specialized binary operation in abstract algebra, such as a convolution or a defined multiplication within a specific algebraic structure, and it can also appear in vector calculus to indicate a variant of star products or in certain contexts to signify a non-standard or custom operator distinct from the usual multiplication or convolution symbols.