NADIR - meaning and definition. What is NADIR
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What (who) is NADIR - definition

DIRECTION POINTING DIRECTLY BELOW A PARTICULAR LOCATION
Nadir line; Nadirs; نَظِير; Nadir image
  • This diagram depicts a satellite observing [[backscattered]] sunlight in the nadir viewing geometry.
  • Diagram showing the relationship between the [[zenith]], the nadir, and different types of [[horizon]]. Note that the zenith is opposite the nadir.

nadir         
n.
1) to reach a nadir
2) at a nadir
nadir         
['ne?d??, 'nad??]
¦ noun
1. the lowest or most unsuccessful point: his fortunes reached their nadir.
2. Astronomy the point on the celestial sphere directly below an observer. The opposite of zenith.
Origin
ME: via Fr. from Arab. na?ir (as-samt) 'opposite (to the zenith)'.
nadir         
1.
The nadir of something such as someone's career or the history of an organization is its worst time. (LITERARY)
1945 to 1946 was the nadir of Truman's presidency.
? zenith
N-SING: usu with poss
2.
In astronomy, the nadir is the point at which the sun or moon is directly below you, on the other side of the earth. Compare zenith
. (TECHNICAL)
N-SING: the N

Wikipedia

Nadir

The nadir (, also UK: ; Arabic: نظير, romanized: naẓīr, lit. 'counterpart') is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface.

The direction opposite of the nadir is the zenith.

Examples of use of NADIR
1. Nadir LARBAOUI, Ambassador of Republic of Algeria H.
2. P.No.3135 Commander Syed Nadir Raza Bilgrami, psn 82.
3. Instead it marks the nadir of the American enterprise there.
4. Captain Fahad Nadir in Deira heads the other team.
5. He brought Israel to a moral nadir and unprecedented paralysis.