U+3310 "㌐" Square Giga Unicode Character

U+3310 "㌐" Square Giga is a CJK (Chinese, Japanese, and Korean) square symbol representing the word "giga" as a unit prefix, commonly used in Japanese typography to denote one billion of a given unit, such as in measurements of computing or data storage. It is part of the CJK Compatibility block, originally encoded for compatibility with legacy East Asian character sets like Shift JIS, where it appears as a single square glyph containing the katakana characters for "gi" and "ga". This character is primarily employed in vertical text or space-constrained contexts to succinctly represent the metric prefix, echoing the broader use of similar squared units like "kilo" or "mega" in Japanese writing.