safe period
noun
an interval of the menstrual cycle when fertilization is considered to be least likely, usually a number of days prior and subsequent to the onset of menstruation.
Origin of safe period
First recorded in 1915–20
Words nearby safe period
safe and sound,
safe area,
safe as houses,
safe harbor,
safe house,
safe period,
safe seat,
safe sex,
safe space,
safe surfing,
safe-blower
British Dictionary definitions for safe period
safe period
noun
informal
the period during the menstrual cycle when conception is considered least likely to occur
See also rhythm method
Medical definitions for safe period
safe period
[ sāf ]
n.
The period in the menstrual cycle when conception is least likely, typically from ten days before to ten days after the onset of menstruation.