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

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British Dictionary definitions for safe period

safe period

noun

informal the period during the menstrual cycle when conception is considered least likely to occurSee also rhythm method

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

safe period in Medicine

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.