from The Century Dictionary.

  • noun The act of going down or downward; descent, either literal or figurative.
  • noun A falling or precipitation; fall; declension.
  • noun In old chemistry, the deposition or precipitation of the essential juice dissolved from the distilled matter. See distillation by descent, under descent.
  • noun In old astronomy, negative ascension, the angular amount by which the projection of a star from the pole upon the equinoctial is below some horizon.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The act of going downward; descent; falling or sinking; declension; degradation.
  • noun (Astron.) the degree or arc of the equator which descends, with a celestial object, below the horizon of an oblique sphere.
  • noun [Obs.] the degree or arc of the equator which descends below the horizon of a right sphere at the same time with the object.


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Old French descension.



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  • Ooh! The Century definition has "old chemistry" in it.

    April 18, 2011