last menstrual period
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Related to last menstrual period: menstrual cycle
last menstrual periodGynecology The most recent time that a ♀ notes menstruation, a datum recorded in a chart during a routine gynecologic visit. See Menstruation.
last menstrual periodAbbreviation: LMP
The date of the first day of menstruation before a presenting illness or the advent of pregnancy-related amenorrhea. The date is used in estimating the expected date of delivery.See: Naegeli rule
See also: period