日にち内ない周しゅう期き

noun

diurnal cycle

Technical term in biology and chronobiology for a roughly 24-hour cycle, often used in contexts like circadian rhythms.

• 日にち内ない周しゅう期きは、生せい物ぶつの睡すい眠みんや体たい温おん調ちょう節せつに関かん係