nadir


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nadir

(nā`dər) [Arab.,=opposite], in astronomy, the point on the celestial spherecelestial sphere,
imaginary sphere of infinite radius with the earth at its center. It is used for describing the positions and motions of stars and other objects. For these purposes, any astronomical object can be thought of as being located at the point where the line of sight
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 directly opposite the zenithzenith,
in astronomy, the point in the sky directly overhead; more precisely, it is the point at which the celestial sphere is intersected by an upward extension of a plumb line from the observer's location.
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, i.e., directly beneath the observer.

nadir

(nay -deer) The point on the celestial sphere that lies directly beneath an observer and is therefore unobservable. It is diametrically opposite the observer's zenith and with the zenith lies on the observer's meridian.

Nadir

(religion, spiritualism, and occult)

The nadir is the point in the heavens directly opposite the zenith, which means that it is the point in the heavens on the other side of Earth directly underneath one’s feet. It should be carefully distinguished from the imum coeli, which is the point directly opposite the midheaven.

nadir

[′nā·dər]
(astronomy)
That point on the celestial sphere vertically below the observer, or 180° from the zenith.
(oceanography)
The point on the sea floor that lies directly below the sonar during a survey.

nadir

nadirclick for a larger image
That point on the celestial sphere directly beneath the observer and directly opposite the zenith (i.e., 180° from the zenith, so that the zenith, nadir, and the center of the earth are in one straight line). Also called a nadir point.

nadir

the point on the celestial sphere directly below an observer and diametrically opposite the zenith
References in periodicals archive ?
I have applied for obtaining calls data record of all the accused and Bisma to ascertain the correct location of Nadir during the night,' he said.
Under the deal, Nadir will have the right to transfer goods to and from the airport for 20 years, but not passengers.
Mr Hill said the fatwa that inspired Nadir Syed urged followers to rise up against Westerners and "rig the roads with explosives for them.
Nadir had stopped Iranians to hold in May 1734 an annual mourning and saying Hassan and Hussein.
Marcus and Nadir are a well-identified team in the local market, having worked closely together for the last five years at Knight Frank.
Polly Peck, a leading stock exchange conglomerate, collapsed in 1990 after Nadir stole money which he sent abroad through a complex series of companies.
A Greek archaeological team from the University of Athens recently returned to the Kurdish capital city to take part in the second phase of excavations at the Nadir site.
Nadir, who was once 36th on the Sunday Times Rich List, was found guilty of 10 counts of theft from the Stock Exchange high performer between 1987 and 1990.
46 paid by Nadir, 71, in February 1989 to the former Lambourn trainer.
The sentencing of Nadir, who donated Au440,000 to the Tories during the 1980s, came a day after he was convicted of stealing Au28.
Nadir had been a wealthy man and had an extravagant lifestyle when he stole pounds 28.