ovulation

名词 ovulation:

1. the expulsion of an ovum from the ovary (usually midway in the menstrual cycle)

1. The periodic state of sexual excitement in the female of most mammals, excluding human beings, that immediately precedes ovulation and during which the female is most receptive to mating; heat.
   (雌性动物的)动情，动情周期大多数哺乳动物(包括人类)的雌性产生的周期性的性冲动，在此期间内雌性具有排卵的优势，所以该期间最适合性交; 刺激