Definition of reactionism in English:

reactionism

noun

  • Reactionary principles or practice.

Origin

Mid 19th century; earliest use found in Philip Schaff (1819–1893), theologian and historian. From reaction + -ism.

Pronunciation

reactionism

/rɪˈakʃ(ə)nɪz(ə)m//rɪˈakʃənɪz(ə)m/