U+25D3 "◓" Circle with Upper Half Black Unicode Character

U+25D3 "◓" Circle with Upper Half Black is a geometric symbol that depicts a perfect circle where the top half is filled with black and the bottom half remains empty or transparent. It is part of the geometric shapes block within the Unicode standard and is often used in graphical user interfaces, weather forecasts to indicate partial shading or status, and in technical diagrams to represent two level states or incomplete coverage. This character balances simplicity and clear visual contrast, making it useful for conveying the concept of something being half filled or partially active.