faction2Pronunciation: /ˈfakʃ(ə)n/Translate faction | into French | into German | into Italian | into Spanish Definition of faction noun [mass noun] a literary and cinematic genre in which real events are used as a basis for a fictional narrative or dramatization: the current vogue for faction seems about to overwhelm narrative historyOrigin: 1960s: blend of fact and fictionfaction in other Oxford dictionaries Definition of faction in the US English dictionary