Definition of: hedonism

(hē′dən·iz′əm) noun
1. The doctrine of certain Greek philosophers (Aristippus and the Cyrenaics) that pleasure, of whatever kind, is the only good.
2. In ethics, gross self–interest; self–indulgence.
3. A tendency to exaggerate and dwell upon pleasurable sensations.
—he′don·ist noun
—he′don·is′tic adjective
—he′don·is′ti·cal·ly adverb