Definitions for nadirˈneɪ dər, -dɪər

This page provides all possible meanings and translations of the word nadir

Random House Webster's College Dictionary

na•dirˈneɪ dər, -dɪər(n.)

  1. the point on the celestial sphere directly beneath a given position or observer and diametrically opposite the zenith.

    Category: Astronomy

  2. the lowest point; point of greatest adversity or despair.

Origin of nadir:

1350–1400; ME 蠐 Ar naẓīr over against, opposite to (the zenith)

na′dir•al(adj.)

Princeton's WordNet

  1. nadir, low-water mark(noun)

    an extreme state of adversity; the lowest point of anything

  2. nadir(noun)

    the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected

Wiktionary

  1. nadir(Noun)

    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. nadir(Noun)

    The lowest point; time of greatest depression.

  3. nadir(Noun)

    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. nadir(Noun)

    An empty box added beneath a full one in a beehive to give the colony more room to expand or store honey.

  5. nadir(Verb)

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

  6. Nadir(ProperNoun)

    A male given name.

Webster Dictionary

  1. Nadir(noun)

    that point of the heavens, or lower hemisphere, directly opposite the zenith; the inferior pole of the horizon; the point of the celestial sphere directly under the place where we stand

  2. Nadir(noun)

    the lowest point; the time of greatest depression

Freebase

  1. 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. Nadir also refers to the downward-facing viewing geometry of an orbiting satellite, such as is employed during remote sensing of the atmosphere, as well as when an astronaut faces the Earth while performing an spacewalk. The word is also used figuratively to mean the lowest point of a person's spirits, or the quality of an activity or profession. The term nadir can also be used to represent the lowest point reached by a celestial body during its apparent orbit around a given point of observation. This can be used to describe the location of the Sun, but it is only technically accurate for one latitude at a time and only possible at the low latitudes. The sun is said to be at the nadir at a location when it is at the zenith at the location's antipode.

The Nuttall Encyclopedia

  1. Nadir

    name given to the part of the heavens directly under our feet, as zenith to that directly over our head.

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