徐波睡眠 じょはすいみん Meanings Noun non-REM sleep See also: ノンレム睡眠 (ノンレムすいみん). Kanji 徐 gradual. Read as ジョ. 波 wave 睡 slumber. Read as スイ. 眠 sleep. Read as ミン. Jinuma: Japanese Dictionary · Word lists