The Collaborative International Dictionary of English v.0.48:

Hedonic \He*don"ic\, a. [Gr. ?, fr. ? pleasure, ? sweet,
   pleasant.]
   1. Pertaining to pleasure.
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   2. Of or relating to Hedonism or the Hedonic sect.
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   Hedonic sect a sect that placed the highest good in the
      gratification of the senses, -- called also Cyrenaic
      sect, (which see), and School of Aristippus.
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