The meaning of NADIR is the point of the celestial sphere that is directly opposite the zenith and vertically downward from the observer.

Specifically, in astronomy, geophysics and related sciences (such as meteorology), the nadir at a given point is the local vertical direction pointing in the direction of the force of gravity at that location.

NADIR definition: 1. the worst moment, or the moment of least hope and least achievement: 2. the point at which…. Learn more.

In fact, nadir is derived from the Arabic nazir, which means “opposite to.” It is still used in astronomy to indicate the part of the celestial sphere located directly below an observer, but also more generally to …

Nadir is a term used in astronomy for the point in the heavens exactly opposite to the zenith, the zenith and nadir being the two poles of the horizon. That is, the zenith is directly overhead, the nadir directly …

6 days ago · Diagram showing the relationship between the zenith, the nadir, and different types of horizon. Nadir is opposite the zenith.

In astronomy, the nadir refers to the point directly below the observer's position, which is often used in navigation to determine the position of stars and planets. Overall, the nadir is a term used to describe …