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| na·dir [ náydər, náy dr ] (plural na·dirs) |
noun |
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| Definition: |
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1. lowest point: the lowest possible point
 the nadir of despair
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2. point on celestial sphere: the point on the celestial sphere directly below the observer and opposite the zenith
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| [14th century. Via French and medieval Latin< Arabic naẓîr (as-samt) "opposite (the zenith)"] |
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