noun
kanji index by on and kun readings
A reference tool, typically found in Japanese dictionaries, that lists kanji characters ordered by their Chinese-derived (on) and native Japanese (kun) pronunciations.
この辞書の巻末には音訓索引が付いている。
This dictionary has an on-kun index at the end.
Compound of 音 (on, 'Chinese reading'), 訓 (kun, 'Japanese reading'), and 索引 (sakuin, 'index').