altruism Meaning, Definition & Usage

  1. noun the quality of unselfish concern for the welfare of others
    selflessness.

WordNet

Al"tru*ism noun
Etymology
F. altruisme (a word of Comte's), It. altrui of or to others, fr. L. alter another.
Definitions
  1. Regard for others, both natural and moral; devotion to the interests of others; brotherly kindness; -- opposed to egoism or selfishness. Recent J. S. Mill.

Webster 1913