- sidereal day,
- sidereal hour,
- sidereal hour angle,
- sidereal month,
- sidereal period
Origin of sidereal
Examples from the Web for sidereal
With the zaimph which was wrapped about him, he looked like a sidereal god surrounded by the firmament.Salammbo|Gustave Flaubert
Not only nebul are probably unstable, but also many of the sidereal systems.The Asteroids|Daniel Kirkwood
So the constitution of the sidereal universe is just like that of the bodies which we call material.Urania|Camille Flammarion
There is another way in which we can form some notion of the immensity of these sidereal distances.
In one day, a man may go out of the town of Kbul to where snow never falls, or he may go, in two sidereal Fol.The Bbur-nma in English|Babur, Emperor of Hindustan
Word Origin for sidereal
also siderial, 1630s, "star-like;" 1640s, "of or pertaining to the stars," earlier sideral (1590s), from French sidereal (16c.), from Latin sidereus "starry, astral, of the constellations," from sidus (genitive sideris) "star, group of stars, constellation," probably from PIE root *sweid- "to shine" (cf. Lithuanian svidus "shining, bright"). Sidereal time is measured by the apparent diurnal motion of the fixed stars. The sidereal day begins and ends with the passage of the vernal equinox over the meridian and is about four minutes shorter than the solar day, measured by the passage of the sun over the meridian.