- the point on the celestial sphere directly below an observer and diametrically opposite the zenith
- the lowest or deepest point; depths
WordReference Random House Learner's Dictionary of American English © 2026
na•dir /ˈneɪdɚ/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- the lowest point:The loss of his job and his wife marked the nadir of his life.
na•dir
(nā′dər, nā′dēr),USA pronunciation n.
na′dir•al, adj.
- Astronomythe point on the celestial sphere directly beneath a given position or observer and diametrically opposite the zenith.
- Astrologythe point of a horoscope opposite the midheaven: the cusp of the fourth house.
- the lowest point;
point of greatest adversity or despair.
- Middle English
Arabic naẓīr over against, opposite to (the zenith) 1350–1400
- 3. bottom, floor, foot, depths.
Collins Concise English Dictionary © HarperCollins Publishers::
nadir /ˈneɪdɪə; ˈnæ-/ n
'nadir' also found in these entries (note: many are not synonyms or translations):