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nadir

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nadir

Main Entry:: na·dir
Pronunciation:: \ˈnā-ˌdir, ˈnā-dər\
Function:: noun
Etymology:: Middle English, from Middle French, from Arabic naḍhīr opposite
Date:: 15th century

1 : the point of the celestial sphere that is directly opposite the zenith and vertically downward from the observer 2 : the lowest point

[nadir illustration]

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