U+212A "K" Kelvin Sign Unicode Character

U+212A "K" Kelvin Sign is a typographic symbol representing the kelvin, the SI base unit of thermodynamic temperature. It is encoded as a distinct character for compatibility with earlier text encodings and to ensure a visually consistent appearance, particularly in mathematics and scientific notation, where it avoids confusion with the uppercase letter 'K' used for other purposes such as the prefix kilo. While its use is largely deprecated in favor of the ordinary letter K in modern Unicode text normalization processes, the Kelvin sign remains supported for backward compatibility in legacy documents and specialized technical contexts where its specific glyphic form is required.