Happening during the day.
(Of a person, creature, group, or species) Primarily active during the night.
(Botany) Having symmetrically arranged parts of similar size and shape:
Find another word for diurnal. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for diurnal, like: daytime, during the day, nocturnal, , every-day, daily, semidiurnal, geomagnetic, semi-diurnal, and sunspot.