noun
enclosed character; circled alphanumeric
A typographic term for a character or symbol placed inside a circle, square, or other enclosure. Common in Japanese text for emphasis, numbering, or special notation.
囲み文字は、地図や案内表示でよく使われる。
Enclosed characters are often used in maps and guide signs.
このフォントには、数字の囲み文字が含まれている。
This font includes circled numeric characters.
Compound of 囲み (kakomi, 'enclosure') + 文字 (moji, 'character'). The term is straightforward and modern, with no obscure historical derivation.