anovulant Syllabification: (an·ov·u·lant)Pronunciation: /anˈävyələnt/ 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 British & World English dictionary