The Collaborative International Dictionary of English v.0.48:

Self-sacrificing \Self`-sac"ri*fi`cing\, a.
   Yielding up one's own interest, feelings, etc; sacrificing
   one's self.
   [1913 Webster]

WordNet (r) 3.0 (2006):

self-sacrificing
    adj 1: willing to deprive yourself [syn: self-denying, self-
           giving, self-sacrificing]

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "self-sacrificing":
   altruistic, committed, consecrated, dedicated, devoted,
   disinterested, humble, modest, sacrificing, self-abasing,
   self-abnegating, self-abnegatory, self-denying, self-devoted,
   self-effacing, self-forgetful, self-immolating, self-neglectful,
   self-neglecting, self-renouncing, self-unconscious, selfless,
   unacquisitive, unpossessive, unpretentious, unselfish,
   unsparing of self