Diel

/ˈdaɪəl/ adjective

Definition

Relating to a 24-hour period or a full day-night cycle, especially in biological or ecological contexts.

Etymology

From Latin 'dies' (day), related to scientific terminology describing daily cycles. Commonly used in biology to describe behaviors or patterns that repeat every 24 hours.

Kelly Says

Scientists discovered that many fish undergo 'diel vertical migration'—they swim up to surface waters at night and down to deeper waters during the day, which is one of Earth's largest daily animal movements.

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