euˌdaimoˈnologyrare—1. [f.Gr. εὐδαίµων, εὐδαίµον-ος fortunate, happy + -ology.] (See quot.) Hence euˌdaimonoˈlogian. a1832Bentham Deontology I. xx. 320 The employment of the word Eudaimonology, to represent the utilitarian doctrines, and Eudaimonologians its professors.