Definition of agathism in English:

agathism

noun

Philosophy
rare
  • The doctrine that all things ultimately tend towards good, although the means by which this comes about may be evil, unpleasant, unfortunate, etc.

Origin

Mid 19th century; earliest use found in The Edinburgh Review. From ancient Greek ἀγαθός good, of uncertain origin + -ism, after agathist.

Pronunciation:

agathism

/ˈaɡəθɪz(ə)m/