Noun
polycystic ovary syndrome (uncountable)
(medicine) A syndrome characterised by polycystic ovaries, menstrual disturbance, and high levels of androgens or insulin.
Synonyms: polycystic ovarian syndrome, Stein-Leventhal syndrome, PCOS (abbreviation)
Polycystic ovary syndrome (PCOS) is the leading cause of infertility worldwide, and it effects up to 5 million U.S. women, according to the CDC. Source: Internet