Source : Webster's Revised Unabridged Dictionary (1913)

Hedonic \He*don"ic\, a. [Gr. ?, fr. ? pleasure, ? sweet,
   pleasant.]
   1. Pertaining to pleasure.

   2. Of or relating to Hedonism or the Hedonic sect.

Source : WordNet®

hedonic
     adj : devoted to pleasure; "a hedonic thrill"; "lives of unending
           hedonistic delight"; "epicurean pleasures" [syn: {hedonistic},
            {epicurean}]