ox·y·to·cic 
(ŏk′sĭ-tōsĭk)
(ŏk′sĭ-tōsĭk)adj.
Hastening or facilitating childbirth, especially by stimulating contractions of the uterus. Used of a drug.
n.
An oxytocic drug.
[French oxytocique, drug that hastens childbirth, from New Latin oxytocius, hastening childbirth, from Late Greek *oxutokiā, sudden delivery, from Greek ōkutokios, oxytocic : ōkus, swift; see ōku- in the Appendix of Indo-European roots + tokos, birth; see tek- in the Appendix of Indo-European roots.]