[ ō-gē′nō-knous′ ]
The rule of contraception stating that the time in the menstrual period when conception is most likely to occur is approximately midway between two menstrual periods, with conception being least likely just before or just after menstruation. It is the basis of the rhythm method of contraception.
THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?
Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?
Words nearby Ogino-Knaus rule
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.