The Collaborative International Dictionary of English v.0.48:

Eudemonics \Eu`de*mon"ics\, Eudaemonics \Eu`d[ae]*mon"ics\, n.
   [Gr. ? conducive to happiness. See Eudemonism.]
   That part of moral philosophy which treats of happiness; the
   science of happiness; -- contrasted with aretaics. --J.
   Grote. Eudemonism