PRECIPITATOR
n.One that urges on with vehemence or rashness.
Pre *cip "i *ta `tor, n. Etym: [L. praecipitator an overthrower. ]
precipitator
pre cip i ta tor |priˈsipəˌtātər priˈsɪpəteɪdər | ▶noun an apparatus for causing precipitation, esp. a device for removing dust from a gas.
pre ¦cipi |ta ¦tor |prɪˈsɪpɪteɪtə | ▶noun an apparatus for causing precipitation, especially a device for removing dust from a gas.