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1650s (n.), 1660s (adj.), from French émétique (16c.), from Latin emeticus, from Greek emetikos "causing vomiting," from emesis "vomiting," from emein "to vomit," from PIE *weme- "to spit, vomit" (see vomit (v.)).
emetic e·met·ic (ĭ-mět'ĭk)
An agent that causes vomiting. adj.