arsine Syllabification: (ar·sine)Pronunciation: /ˈärsēn, ärˈsēn/Definition of arsine noun Chemistry a poisonous gas smelling slightly of garlic, made by the reaction of some arsenides with acids. Arsenic trihydride; chemical formula: AsH3 Origin: late 19th century: from arsenic, on the pattern of aminearsine in other Oxford dictionaries Definition of arsine in the British & World English dictionary
