Descension

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Descension \De*scen"sion\, n. [OF. descension, L. descensio. See
     {Descent}.]
     The act of going downward; descent; falling or sinking;
     declension; degradation.
     [1913 Webster]
  


     {Oblique descension} (Astron.), the degree or arc of the
        equator which descends, with a celestial object, below the
        horizon of an oblique sphere.
  
     {Right descension}, the degree or arc of the equator which
        descends below the horizon of a right sphere at the same
        time with the object. [Obs.]
        [1913 Webster]