fullwidth

From full +‎ width, as a calque of Japanese 全角 (zenkaku).

fullwidth (not comparable)

1. (computing, typography) Of a text character, occupying the space of two alphanumeric characters in a monospace font, or two "normal" text columns.

• Chiefly relevant to CJK monospace fonts, where alphanumeric characters are normally halfwidth and Asian characters (Chinese characters, kana, etc.) are normally . However, there are designated halfwidth kana and fullwidth alphanumeric characters that may appear in any CJK font, monospace or proportional, and Chinese characters are almost always "fullwidth".

• full-width

• halfwidth