SIDEREAL • DICCIONARIO INGLES.COM • Definition of Sidereal

Add this Dictionary
to your website!
See more options...

Listen

adjective

Sidereal adj.

Relating to the stars; starry; astral; as, sidereal astronomy.

(Astron.) Measuring by the apparent motion of the stars; designated, marked out, or accompanied, by a return to the same position in respect to the stars; as, the sidereal revolution of a planet; a sidereal day.

Sidereal clock, Sidereal day, Sidereal month, Sidereal year. See under Clock, Day, etc.

Sideral time, time as reckoned by sideral days, or, taking the sidereal day as the unit, the time elapsed since a transit of the vernal equinox, reckoned in parts of a sidereal day. This is, strictly, apparent sidereal time, mean sidereal time being reckoned from the transit, not of the true, but of the mean, equinoctial point.

See images of 'Sidereal'

Etymology of 'Sidereal'

Collaborative International Dictionary of English 0.48

Share |

"Sidereal" Quotes from Famous Books

... these make it probable that the career of other stars, when adequately inquired into, would be found to be like that of our own sun. Observation daily enhances this probability, for our study of the sidereal universe is continually showing us stars in all stages of development. We find irregular nebulae, for example; we find spiral and spheroidal nebulae; we find stars which have got beyond the nebulous stage, but are still at a whiter heat than our sun; and we also find ...

— The Unseen World and Other Essays • John Fiske

... rectilinear motion, in the universe. Variable motion is an essential property of matter. Laplace's demonstration of the parallelogram of forces is a begging of the question; and the attempts of them all to show that the difference of twenty minutes between the sidereal and actual revolution of the earth round the sun arises from the tugging of the Sun and Moon at the pot-belly of the earth, without being sure even that the earth has a pot-belly at all, is perfect quackery. The said difference ...

— A Budget of Paradoxes, Volume I (of II) • Augustus De Morgan

... scorching them like a burning glass. The heat of the equator, raising up the water in steam, had formed a band of shade around the earth. From other worlds it must appear like a girdle of clouds almost similar to the sidereal rings. ...

— Mare Nostrum (Our Sea) - A Novel • Vicente Blasco Ibanez

... his discovery, in which he gave to the four new bodies the names of the Medicean Stars, in honour of his patron, Cosmo de Medici, Grand Duke of Tuscany. This work, under the title of "Nuncius Sidereus," or the "Sidereal Messenger," was dedicated to the same prince; and the dedication bears the date of the 24th of March, only two days after ...

— The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler • David Brewster

... the heavenly bodies exists a body, partly transparent and partly luminous, which we call the sidereal heaven. There exists also a heaven wholly transparent, called by some the aqueous or crystalline heaven. If, then, there exists a still higher heaven, it must be wholly luminous. But this cannot be, for then the air would be constantly illuminated, and there would be no night. Therefore the empyrean ...

— Summa Theologica, Part I (Prima Pars) - From the Complete American Edition • Thomas Aquinas

More quotes...