The Collaborative International Dictionary of English v.0.48:
Antiemetic \An`ti*e*met"ic\, a. & n. (Med.) Same as Antemetic. [1913 Webster]WordNet (r) 3.0 (2006):
antiemetic n 1: a drug that prevents or alleviates nausea and vomiting [syn: antiemetic, antiemetic drug]