What does OPSS stand for?

What does OPSS mean?

OPSS	Ontario Provincial Standard Specification Academic & Science » Architecture
OPSS	OPerations, Sales, and Service Business » General
OPSS	OPerations Safety System Governmental » Transportation
OPSS	Orbital Propellant Storage Subsystem Governmental » NASA
OPSS	Orange Programmable Sensor System Computing » Software
OPSS	Orlando Pool and Spa Show Community » Conferences
OPSS	Ouachita Parish School System Community » Schools
OPSS	Optics and Photonics Society of Singapore Business » Professional Organizations
OPSS	Orchard Park Secondary School Community » Schools
OPSS	Saidu Sharif, Pakistan Regional » Airport Codes
OPSS	Ontario Provincial Standard Specification Miscellaneous » Construction