factumEnglishOxford Dictionary of Englishfactum /ˈfaktəm / ▸ noun (plural factums)(plural or facta /ˈfaktə/) Law mainly Canadian English a statement of the facts of a case: the factum of the intervener shall not exceed 20 pages. – ORIGIN mid 17th century: from Latin, literally ‘something done or made’ (compare fact).