U+33BA "㎺" Square Pw Unicode Character

U+33BA "㎺" Square Pw is a precomposed CJK (Chinese, Japanese, and Korean) square symbol that represents the unit "pico-watt," a metric unit of power equal to one trillionth of a watt. It is part of the CJK Compatibility block in Unicode, which includes various abbreviations and unit symbols that were frequently used in East Asian text, particularly in Japanese industrial and technical contexts, before the adoption of standard plain text formatting. This character allows the unit to be displayed as a single, compact glyph rather than using separate characters for the prefix and base unit.