SQUARE ROOT

About this character

U+221A is the radical symbol, commonly known as the square root sign, denoting the square-root operation in mathematics. It indicates a value that, when multiplied by itself, produces the radicand beneath it. Historically, the symbol evolved from the Latin “radix” via a handwritten “r,” later standardized in Renaissance typography. In programming, it appears in mathematical notation and formula renderers; in LaTeX typesetting, it is generated by `\sqrt{}`. As a Unicode character, it also serves in design as a compact icon for logic, precision, or growth, and in plain-text contexts where a formal equation editor is unavailable.

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