| Main Entry: | nadir |
| Part of Speech: | noun |
| Definition: | lowest point |
Synonyms: |
all-time low, base, bottom, floor, low point, record low, rock bottom, zero level |
| Notes: | zenith derived from Arabic samt ar-ras 'the way or road above one's head'; zenith technically is the point directly above the observer and nadir is the point directly below |