What is another word for biological rhythm?
Pronunciation: [bˌa͡ɪəlˈɒd͡ʒɪkə͡l ɹˈɪðəm] (IPA) 
Biological rhythm refers to the natural physiological patterns that organisms follow on a daily, monthly, annual, or even longer basis. There are several synonymous terms for biological rhythms, including circadian rhythm, which refers to the 24-hour cycle governing human sleep-wake patterns, seasonal rhythm, which refers to the annual changes in temperature, food availability, and daylight duration, and infradian rhythm, which refers to the cycles that are longer than a day, such as menstrual cycles. Other terms include ultradian rhythm, which refers to patterns that occur multiple times per day, and chrono-physiology, which highlights the relationship between biological rhythms and time. Ultimately, the multiple synonyms for biological rhythms reflect the diversity and complexity of the natural physiological patterns observed across different organisms and time scales.
