noun
ovulation phase
Physiology term for the phase of the menstrual cycle when ovulation occurs.
排卵期には基礎体温が上昇する。
Basal body temperature rises during the ovulation phase.
月経周期 is the broader menstrual cycle, of which 排卵期 is a specific phase.
Compound of 排卵 (ovulation) and 期 (period, phase).