(Last edited: Wednesday, 27 September 2023, 2:51 PM)
Media
Media Zenith & Nadir, DJ Jeffery, University of Nevada, Las Vegas, 2003
Definitions
Short Definition In astronomy, Nadir is a point on the celestial sphere that is directly below the observer. The nadir is diametrically opposite to the zenith.
Detailed Definition In astronomy, nadir lies on the intersection of the celestial sphere with the imaginary line passing from the observer through the centre of Earth. The direction of nadir matches that of the gravitational force. The nadir and the zenith form two poles of the horizon.
In medicine, nadir is predominantly used to describe blood cell counts at their lowest during chemotherapy. Each chemotherapy treatment comes with the nadir period. Figuratively, nadir means the lowest point and may be used to emphasize the state of one’s feelings, quality of activity and affairs.
Etymology From Medieval Latin nadir, from Arabic naẓīr as-samt, composed of naẓīr “counterpart, corresponding to” and as-samt“the zenith”
Sample Sentences
A nadir image is a satellite image or an areal photo of Earth taken vertically in the downward alignment.
During chemotherapy, the nadir time usually comes in about 10 days after the start of treatment, although this is mostly dependent on drugs given.
The relationship between the USA and USSR reached its nadir in the 1980s.
Translations of Terms/Concepts into Partner Languages
French le nadir
German der Nadir
Italian il nadir
Polish nadir
Swedish nadir
Additional Translations of Terms/Concepts into Other Languages
Russian надир
Ukrainian надир
Links to Videos/Articles:
The Editors of Encyclopedia Britannica. (2018, February 21). Nadir | Definition & Astronomy. Encyclopedia Britannica. Retrieved [ 06.14.2023 ], from https://www.britannica.com/science/nadir
Definition of nadir. (2023). In Merriam-Webster Dictionary. Retrieved [ 06.14.2023 ], from https://www.merriam-webster.com/dictionary/nadir
