1.
five-seven meter; 5-7 syllable rhythm
A rhythmic pattern in Japanese poetry where lines alternate between five and seven morae (syllable units). This meter forms the foundation of traditional Japanese verse forms including tanka and haiku.
A compound of 五 (five), 七 (seven), and 調 (rhythm, meter). The five-seven pattern is deeply embedded in Japanese prosody. It appears not only in classical poetry but also in modern slogans, proverbs, and song lyrics.