oestrus

noun 0.763

menstrual cycle

noun 0.709

metestrus

noun 0.667

estradiol

noun 0.597

luteal phase

noun 0.583

cycle

noun 0.573

menstruation

noun 0.559

ovulation

noun 0.559

estrone

noun 0.540

cyclicity

noun 0.531

life cycle

noun 0.529

uterine

noun 0.527

nasal cycle

noun 0.527

progesterone

noun 0.521

rutting season

noun 0.512

gestation period

noun 0.507

endometrium

noun 0.507

eutherian

noun 0.505

menstruum

noun 0.504

induced ovulation

noun 0.500