Crossword clues for sidereal
The Collaborative International Dictionary
Month \Month\ (m[u^]nth), n. [OE. month, moneth, AS. m[=o]n[eth], m[=o]na[eth]; akin to m[=o]na moon, and to D. maand month, G. monat, OHG. m[=a]n[=o]d, Icel. m[=a]nu[eth]r, m[=a]na[eth]r, Goth. m[=e]n[=o][thorn]s. [root]272. See Moon.] One of the twelve portions into which the year is divided; the twelfth part of a year, corresponding nearly to the length of a synodic revolution of the moon, -- whence the name. In popular use, a period of four weeks is often called a month. Note: In the common law, a month is a lunar month, or twenty-eight days, unless otherwise expressed. --Blackstone. In the United States the rule of the common law is generally changed, and a month is declared to mean a calendar month. --Cooley's Blackstone. A month mind. (a) A strong or abnormal desire. [Obs.] --Shak. (b) A celebration made in remembrance of a deceased person a month after death. --Strype. Calendar months, the months as adjusted in the common or Gregorian calendar; April, June, September, and November, containing 30 days, and the rest 31, except February, which, in common years, has 28, and in leap years 29. Lunar month, the period of one revolution of the moon, particularly a synodical revolution; but several kinds are distinguished, as the synodical month, or period from one new moon to the next, in mean length 29 d. 12 h. 44 m. 2.87 s.; the nodical month, or time of revolution from one node to the same again, in length 27 d. 5 h. 5 m. 36 s.; the sidereal, or time of revolution from a star to the same again, equal to 27 d. 7 h. 43 m. 1
5 s.; the anomalistic, or time of revolution from perigee to perigee again, in length 27 d. 13 h. 18 m. 37.4 s.; and the tropical, or time of passing from any point of the ecliptic to the same again, equal to 27 d. 7 h. 43 m. 4.7 s.
Solar month, the time in which the sun passes through one sign of the zodiac, in mean length 30 d. 10 h. 29 m. 4.1 s.
Douglas Harper's Etymology Dictionary
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" (cognates: 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.
a. 1 Of or relating to the stars. 2 (context astronomy English) Relating to a measurement of time relative to the position of the stars. 3 (context astronomy English) Relating to a measurement of time relative to the point of the vernal equinox.
adj. of or relating to the stars or constellations; "sidereal bodies"; "the sidereal system"
(of divisions of time) determined by daily motion of the stars; "sidereal time" [ant: civil]
Sidereal may refer to:
- Measurements of time:
- Sidereal time
- Sidereal day
- Sidereal month
- Sidereal year
- Sidereal period of an object orbiting a star
- Sidereal and tropical astrology
- Sidereus Nuncius, or Sidereal Messenger, a scientific work by Galileo Galilei
Usage examples of "sidereal".
Since the sidereal, tropical and anomalistic years are so close together in length, we get sensibly the same answer whichever one we choose.
Then, since the fire of the sidereal system has attained its goal, why does it not stay at rest?
Thomas said, wryly, as he let himself relax into the pool, savoring its comforts before steeling himself to get out, dress himself, feed himself, and take a trip to the center of what Lumen called the galaxy--implying thereby that the Milky Way was merely one sidereal system among many.
He took the liberty of pressing Lumen on the issue when his comrades eventually fell uneasily silent as they gathered at the foot of the mighty cannon-cum-telescope that would transmit them to the heart of the sidereal system.
Thomas said, wryly, as he let himself relax into the pool, savoring its comforts before steeling himself to get out, dress himself, feed himself, and take a trip to the center of what Lumen called the galaxyimplying thereby that the Milky Way was merely one sidereal system among many.
This pendant world, observe, is not the earth, as Addison understood it, but the entire sidereal universe, depicted not as the infinity we now know it to be, but as a definite object, so insulated in the vastness of space as to be perceptible to the distant Fiend as a minute star, and no larger in comparison with the courts of Heaven--themselves not wholly seen--than such a twinkler matched with the full-orbed moon.
Sidereal light illuminated the diaphanous membranes, devoid of color, the delicate antennae, the feminine waist and long, improbably spindly legs and arms that shone as if covered with tiny scales, the face with its bulging, faceted eyes, and the attenuated tongue, still searching.
Speech was a communal howl, the bathroom door opened onto a hotly lit sidereal reality, and the bartender posed a cryptic shadow against what an unwitting soul might take for an illuminated mirror but was in truth an illusion cast by a malefic device of unguessable origin.
It examined itself, ascertained that it could reverse the field of the teratron and that shorting the poles would produce a mononuclear sidereal generator.
Given all the causes, all must happen beyond aye or nay--that is, all the external and whatever may be due to the sidereal circuit--therefore when the Soul has been modified by outer forces and acts under that pressure so that what it does is no more than an unreflecting acceptance of stimulus, neither the act nor the state can be described as voluntary: so, too, when even from within itself, it falls at times below its best and ignores the true, the highest, laws of action.
The reason was that the sidereals were supposed to have penetrated to the core along spirals, the cislunar missiles pushing the crumbling globe toward the Sun and the translunar toward the planet.
Jean herself, chilled silver in the candlelight, pleasant to smell, slow to anger, an easeful creature experience, sidereal distirietion of her left buttock, make of that what I will, snug in the gunnels of her wraparound legs.
The power stores were situated at the stern—in annihilative containers, in the sidereal engine room not accessible to personnel, and in chambers that had a special purpose.
There, in chambers off limits to personnel, lay sidereal converters, seemingly inert colossi suspended in vacuum, like the legendary tomb of Mohammed, on invisible magnetic cushions.
The view showed a corrected view of the sidereal universe as it would have appeared to an object with the ship's pseudospeed.