E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Nadir.
An Arabic word, signifying that point in the heavens which is directly opposite to the zenith.
1
From zenith down to nadir. From the highest point of elevation to the lowest depth.
2
Nadir. A representation of the planetary system.
3
We then lost (1091) a most beautiful table, fabricated of different metals . Saturn was of copper, Jupiter of gold, Mars of iron, the Sun of latten, Mercury of amber, Venus of tin, and the Moon of silver . It was the most celebrated nadir in all England.Ingulphus.