noun which may take the genitive case particle 'no'
premenstrual
Medical and everyday term for the period before menstruation. Often used in compounds like 月経前症候群 (premenstrual syndrome).
Premenstrual symptoms vary from person to person.
Premenstrual syndrome is also called PMS.
Compound of 月経 (menstruation) and 前 (before). The kanji 月経 is a Sino-Japanese term for menstruation, literally 'monthly passing'.