The word "nadir" in English has two main meanings:
- Literally, in astronomy and related sciences, the nadir is the point in the sky directly opposite the zenith, meaning it is the direction pointing directly downwards from a particular location (underfoot). It is the lowest point in the celestial sphere under an observer.
- Figuratively, "nadir" is used to describe the lowest or worst point of something, such as a person's spirits, a situation, or a career. It represents a moment of least hope, achievement, or a low point in conditions or fortunes.
Its etymology traces back to Arabic, meaning "opposite to" or "direction opposite".
Summary
- Literal meaning: The point directly below a location, opposite the zenith in the sky.
- Figurative meaning: The lowest or worst moment or point of something, like a career or situation.
This gives a clear understanding of the word "nadir" in English usage.