Menses/ˈmensiːz/ Definition 1 of 1Pro Tip 1/3Medical Term Menses is a clinical term often used by healthcare professionals. During your consultation, the doctor might ask about your menses. Pro Tip 2/3Cultural Sensitivity Discussions of menses can be private or sensitive in many cultures. She preferred to discuss her menses only with her doctor. Pro Tip 3/3Monthly Cycle Menses refers to a part of the menstrual cycle, which is not always precisely a month. Her menses cycle is shorter than the average 28 days.