Origin of diurnal
Examples from the Web for diurnally
Historical Examples of diurnally
Mountain and valley breezes furnish another example of diurnally reversed winds.Meteorology
Charles Fitzhugh Talman
I think we should diurnally station a good London band on high, and play his Majesty to bed—the sun.Evan Harrington, Complete
It had never before dawned upon us that we thus added three uncounted miles to our fourteen diurnally counted ones.
Word Origin for diurnal
late 14c., from Late Latin diurnalis "daily," from Latin dies "day" + -urnus, an adjectival suffix denoting time (cf. hibernus "wintery"). Dies "day" is from PIE root *dyeu- "to shine" (cf. Sanskrit diva "by day," Welsh diw, Breton deiz "day;" Armenian tiw; Lithuanian diena; Old Church Slavonic dini, Polish dzień, Russian den), literally "to shine" (cf. Greek delos "clear;" Latin deus, Sanskrit deva "god," literally "shining one;" Avestan dava- "spirit, demon;" Lithuanian devas, Old Norse tivar "gods;" Old English Tig, genitive Tiwes, see Tuesday).
- Occurring once in a 24-hour period; daily.
- Having a 24-hour cycle. The movement of stars and other celestial objects across the sky are diurnal.