選せん言げん的てき三さん段だん論ろん法ぽうせんげんてきさんだんろんぽうMeanings1noundisjunctive syllogismA logical argument form where one disjunct is denied, and the other is affirmed. Technical term used in formal logic.See also: 三段論法選せん言げん的てき三さん段だん論ろん法ぽうは、論ろん理り学