三段活用
Meanings
1
trigrade conjugation; three-grade conjugation
A classical Japanese verb conjugation pattern where the stem vowel alternates between i, u, and o. Applies to certain verbs ending in す or く in classical grammar. A technical term used in grammar study.
In classical grammar, '死ぬ' is a na-row irregular conjugation, and 'す' is considered a type of trigrade conjugation.
In trigrade conjugation, the mizenkei is on the 'i' row, the renyōkei on the 'i' row, the shūshikei on the 'u' row, the rentaikei on the 'u' row, the izenkei on the 'o' row, and the meireikei on the 'o' row.