sternutator

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ster·nu·ta·tor / ˈstərnyəˌtātər/ • n. technical an agent that causes sneezing. ∎  an agent used in chemical warfare that causes irritation to the nose and eyes, pain in the chest, and nausea.DERIVATIVES: ster·nu·ta·to·ry / stərˈnyoōtəˌtôrē/ adj. & n. (pl. -ries) .