U+1F78A "🞊" White Circle Containing Black Small Circle Unicode Character

U+1F78A "🞊" White Circle Containing Black Small Circle is a specialized geometric symbol representing a white circular outline enclosing a smaller solid black dot at its center. This glyph belongs to the Geometric Shapes Extended block and is often used in technical diagrams, map legends, or data visualization to denote a state of mutual containment, such as a target, a node with a core, or a nested hierarchy where the outer circle signifies a boundary or system and the inner dot marks a precise location or value. Its design suggests a relationship of centrality or inclusion, making it useful for indicating points of interest, origins, or positions within a larger field without relying on color.