- diurnal arc,
- diurnal circle,
- diurnal motion,
- diurnal parallax,
Origin of diurnal
Examples from the Web for diurnal
Its diurnal curve and the subsequent changes after inversion are given in figure 204.Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
But as soon as the diurnal rotation has been gone through, it at once begins over again.On the magnet, magnetick bodies also, and on the great magnet the earth|William Gilbert of Colchester
If so, how then can we explain the diurnal fall while magnetism is most active?The Philosophy of the Weather|Thomas Belden Butler
If anything fall out amiss which cannot be smothered, the diurnal hath a help at maw.
The upper limit of the “earth” haze is determined by the height of diurnal atmospheric convection.Visual Illusions|Matthew Luckiesh
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.