noun
furigana; kana indicating kanji pronunciation
Small kana printed above or beside kanji to show the reading. Common in learning materials, manga, and children's books.
See also: ふりがな
この漢字には読み仮名が振ってある。
Furigana is attached to this kanji.
子供向けの本には読み仮
Books for children have furigana.
ふりがな is a more common, casual term for the same concept. 読み仮名 is slightly more formal or technical.
Compound of 読み (yomi, 'reading') and 仮名 (kana, 'kana characters').