- a of or belonging to or active during the day
diurnal animals are active during the day
diurnal flowers are open during the day and closed at night
diurnal and nocturnal offices
- s having a daily cycle or occurring every day
diurnal rotation of the heavens
- The little eight-page newspapers of Paris, brilliant, powerful and many, continue their diurnal animadversions against the United States.
- From Constantinople at the Golden Horn, along the length of the Bosporus, flanked by its minarets and white domes, diurnal scene of a thousand scurrying ships, all was silent as a graveyard.
- But this theory of diurnal, tide-like pulsation has not explained all radio reactions against the Kennelly-Heaviside Layer.
- Verlyn Klinkenborg in Business Mirror
The writer Verlyn Klinkenborg writes: "If humans were truly at home under the light of the moon and stars, we would go in darkness happily..........Instead, we are diurnal creatures, with eyes adapted to living in the sun's light."
- Daniel in San Francisco Chronicle
Green Valley is the most consistent viticulture appellation in Northern California,says Daniel Roberts, a viticultural consultant. "There's less diurnal variance, or difference between day and nighttime temperatures, and less difference...