What is the English word of Sambathika maandhyam?

The English term for "Sambathika maandhyam" is "periodic menstruation" or "menstrual cycle." It refers to the regular physiological process in which a woman's body prepares for potential pregnancy, typically occurring monthly. This cycle involves hormonal changes, ovulation, and the shedding of the uterine lining if fertilization does not occur.