Bible Dictionaries
Nadir

Webster's Dictionary

(1):

(n.) The lowest point; the time of greatest depression.

(2):

(n.) That point of the heavens, or lower hemisphere, directly opposite the zenith; the inferior pole of the horizon; the point of the celestial sphere directly under the place where we stand.

Bibliography Information
Webster, Noah. Entry for 'Nadir'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​n/nadir.html. 1828.