Final answer:
An anovulatory menstrual cycle refers to the absence or abnormal stoppage of the menses. It occurs when a woman's ovaries do not release an egg during her menstrual cycle.
Step-by-step explanation:
The absence or abnormal stoppage of the menses is called anovulatory menstrual cycle. An anovulatory menstrual cycle occurs when a woman's ovaries do not release an egg during her menstrual cycle, resulting in the absence of menstruation or irregular periods.