Varying on a day/night basis, e.g. "diel variation in fge."
the number of daylight hours best suited to the growth and maturation of an organism.
involving a 24-hour period that usually includes a day and its adjoining night.
Related to a 24-hour period that usually includes a day and the adjoining night.
The daily cycle. Diel is sometimes used by soil micrometeorologists and atmospheric chemists in place of the word diurnal.