Definition of "hedonic" [he•don•ic]

• Of, relating to, or marked by pleasure. (adjective)
• Of or relating to hedonism or hedonists. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "To find out, he and his colleagues asked a group of 65 undergraduates to complete an online survey each day for three weeks that assessed how times they participated in hedonic, or pleasure-seeking behaviours, versus meaningful activities, such as helping others, listening to friends’ problems and/or pursuing one’s life goals."
• "Ord refers to the "hedonic treadmill" whereby people expend more and more resources to maintain the same level of satisfaction, and to evidence that people get more happiness from spending money on other people than buying things for themselves."
• "The pleasure that comes with, say, a good meal, an entertaining movie or an important win for one's sports team—a feeling called "hedonic well-being"—tends to be short-term and fleeting."