The Collaborative International Dictionary of English v.0.48:

Deprivation \Dep`ri*va"tion\, n. [LL. deprivatio.]
   1. The act of depriving, dispossessing, or bereaving; the act
      of deposing or divesting of some dignity.
      [1913 Webster]

   2. The state of being deprived; privation; loss; want;
      bereavement.
      [1913 Webster]

   3. (Eccl. Law) the taking away from a clergyman his benefice,
      or other spiritual promotion or dignity.
      [1913 Webster]

   Note: Deprivation may be a beneficio or ab officio; the first
         takes away the living, the last degrades and deposes
         from the order.
         [1913 Webster]

WordNet (r) 3.0 (2006):

deprivation
    n 1: a state of extreme poverty [syn: privation, want,
         deprivation, neediness]
    2: the disadvantage that results from losing something; "his
       loss of credibility led to his resignation"; "losing him is
       no great deprivation" [syn: loss, deprivation]
    3: act of depriving someone of food or money or rights;
       "nutritional privation"; "deprivation of civil rights" [syn:
       privation, deprivation]