Pronunciation: (pi-per'u-zēn", -zin, pī-, pip'ur-u-),[key] —n.Chem. 1. Also called pip•er•az•i•dinePronunciation: (pip"u-raz'i-dēn", -din, pī"pu-).[key]a colorless, crystalline, deliquescent ring compound, C4H10N2, prepared by the reaction of ethylene bromide or ethylene chloride with ammonia: used chiefly in veterinary medicine as an anthelmintic, and as an insecticide.
2. any derivative of this compound.