sternutatorPronunciation: /ˈstəːnjʊˌteɪtə/Definition of sternutator noun an agent that causes sneezing, especially one used in chemical warfare that causes irritation to the nose and eyes, pain in the chest, and nausea. Derivatives sternutatoryPronunciation: /-ˈnjuːtət(ə)ri/ adjective & noun (plural sternutatories)sternutator in other Oxford dictionaries Definition of sternutator in the US English dictionary