The Collaborative International Dictionary of English v.0.48:

Condescension \Con`de*scen"sion\, n. [L. condescensio.]
   The act of condescending; voluntary descent from one's rank
   or dignity in intercourse with an inferior; courtesy toward
   inferiors.
   [1913 Webster]

         It forbids pride . . . and commands humility, modesty,
         and condescension to others.             --Tillotson.
   [1913 Webster]

         Such a dignity and condescension . . . as are suitable
         to a superior nature.                    --Addison.

   Syn: Complaisance; courtesy; affability.
        [1913 Webster]

WordNet (r) 3.0 (2006):

condescension
    n 1: the trait of displaying arrogance by patronizing those
         considered inferior [syn: condescension,
         superciliousness, disdainfulness]
    2: a communication that indicates lack of respect by patronizing
       the recipient [syn: condescension, disdain, patronage]
    3: affability to your inferiors and temporary disregard for
       differences of position or rank; "the queen's condescension
       was intended to make us feel comfortable" [syn:
       condescension, condescendingness]