The Collaborative International Dictionary of English v.0.48:

Self-centered \Self`-cen"tered\, Self-centred \Self`-cen"tred\,
   a.
   1. Centered in itself, or in one's self.
      [1913 Webster]

            There hangs the ball of earth and water mixt,
            Self-centered and unmoved.            --Dryden.
      [1913 Webster]

   2. interested solely or primiarily in oneself, or one's own
      welfare; disinclined to consider the interests of others;
      selfish; egotistical.
      [PJC] Self-centering

WordNet (r) 3.0 (2006):

self-centered
    adj 1: limited to or caring only about yourself and your own
           needs [syn: egoistic, egoistical, egocentric,
           self-centered, self-centred] [ant: altruistic,
           selfless]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "self-centered":
   acquisitive, ambitious for self, autistic, careerist, egocentric,
   egocentristic, egoistic, egotistical, grasping, greedy,
   individualistic, narcissan, narcissine, narcissistic, narcistic,
   personalistic, possessive, privatistic, remote, self-absorbed,
   self-admiring, self-advancing, self-besot, self-considerative,
   self-contained, self-devoted, self-esteeming, self-indulgent,
   self-interested, self-jealous, self-occupied, self-pleasing,
   self-seeking, self-serving, self-sufficient, selfish