Source : Webster's Revised Unabridged Dictionary (1913)

Oxytocic \Ox`y*toc"ic\, a. [Gr. ???? sharp, quick + ???? birth.]
   (Med.)
   Promoting uterine contractions, or parturition. -- n. An
   oxytocic medicine or agent.

Source : WordNet®

oxytocic
     n : a drug that induces labor by stimulating contractions of the
         muscles of the uterus [syn: {oxytocic drug}]