When a woman or female animal ovulates, an egg is produced from one of her ovaries. Some girls may first ovulate even before they menstruate. + ovulation ovu·la·tion By noticing these changes, the woman can tell when ovulation is about to occur. when a woman or female animal ovulates, she produces eggs inside her body (ovulum , from ovum; OVUM)
the discharge of an ovum from a vesicular follicle of the ovary; this usually occurs on the 14th day after the first day of the last menstrual period (Morris 1992)