Ogino-Knaus rule

O·gi·no-Knaus rule

(ō-jē'nō naws),
the time in the menstrual period when conception is most likely to occur is at about midway between two menstrual periods; fertilization of the ovum is least likely just before or just after menstruation; the basis for the rhythm method of contraception.

O·gi·no-Knaus rule

(ō-jē'nō-naws' rūl)
The time in the menstrual period when conception is most likely to occur is at about midway between two menstrual periods; fertilization of the oocyte is least likely just before or just after menstruation; the basis for the rhythm method of contraception.

Knaus,

Hermann, Austrian gynecologist, 1892–.
Ogino-Knaus rule - see under Ogino

Ogino,

Kyusaka, 20th century Japanese physician.
Ogino-Knaus rule - the basis for the rhythm method of contraception.