last menstrual period


last menstrual period

Gynecology The most recent time that a ♀ notes menstruation, a datum recorded in a chart during a routine gynecologic visit. See Menstruation.

last menstrual period

Abbreviation: 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 ruleSee also: period