PCOS (polycystic ovary syndrome) is an endocrine disorder.
PCOS may also refer to: Medicine Palliative Care Outcome Scale, a pain scale
Computer operating systems PC OS, the operating system for a personal computer PC/OS, or Black Lab Linux, a Linux distribution Olivetti's Professional Computer Operating System, such as on the Olivetti M20
Other meanings Comunitarian Party Option Seven (Spanish: Partido Comunitario Opción Siete), a political party in Colombia Precinct count optical scan, a voting machine Philharmonic Chamber Orchestra Society, now The Philharmonic Orchestra, Singapore
See also
PCO (disambiguation)