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

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Ogino,

Kyusaka, 20th century Japanese physician.

Ogino-Knaus rule - the basis for the rhythm method of contraception.