NADIR

Nadir

The nadir is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there. Since the concept of being below is itself somewhat vague, scientists define the nadir in more rigorous terms. Specifically, in astronomy, geophysics and related sciences, the nadir at a given point is the local vertical direction pointing in the direction of the force of gravity at that location. The direction opposite of the nadir is the zenith.

The above text is a snippet from Wikipedia: Nadir
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nadir

Noun

  1. The point of the celestial sphere, directly opposite the zenith; inferior pole of the horizon; point of the celestial sphere directly under the place where we stand.
  2. The lowest point; time of greatest depression.
  3. The axis of a projected conical shadow; the direction of the force of gravity at a location; down.
    The nadir of the sun is the axis of the shadow projected by the Earth.
  4. An empty box added beneath a full one in a beehive to give the colony more room to expand or store honey.

Verb

  1. To extend (a beehive) by adding an empty box at the base.


The above text is a snippet from Wiktionary: nadir
and as such is available under the Creative Commons Attribution/Share-Alike License.

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