Definition of duellism in English:

duellism

(also duelism)

noun

rare
  • The practice of engaging in duels.

Origin

Early 17th century. From duel + -ism, probably after duellist.

Pronunciation

duellism

/ˈdjuːəlɪz(ə)m/ /ˈdʒuːəlɪz(ə)m/