anovulantPronunciation: /aˈnɒvjʊl(ə)nt/ MedicineDefinition of anovulant adjective (chiefly of a drug) preventing ovulation. noun an anovulant drug. Origin: 1960s: from an-1 + ovul(ation) + -antanovulant in other Oxford dictionaries Definition of anovulant in the US English dictionary