丸括弧 まるかっこ Also written まるカッコ, まるがっこ, 丸カッコ, 丸かっこ, 丸がっこ Meanings Noun parentheses; round brackets Kanji 丸 round. Read as まる. 括 tie up. Read as カツ. 弧 arc. Read as コ. Jinuma: Japanese Dictionary · Word lists