U+33A8 "㎨" Square M over S Squared Unicode Character

U+33A8 "㎨" Square M over S Squared is a precomposed CJK compatibility ideograph used to represent the unit of acceleration, meters per second squared (m/s²), in a single square character form. It belongs to the CJK Compatibility block and was included to facilitate compatibility with older East Asian character encodings where such composite units are commonly required for compact text representation. This symbol allows for the efficient encoding of the scientific unit without needing to separately combine an uppercase M, a slash, and an uppercase S with a superscript 2, simplifying typographic rendering in certain legacy systems and documents.