- PPMS
- Primary progressive multiple sclerosis (Medical » Physiology)* Professional Practices Management System (Business » General)* Physical Property Measurement System (Governmental » US Government)* Physical Properties Measurement System (Academic & Science » Electronics)* Personnel Performance Management System (Governmental » US Government)* Personnel Performance Management System (Business » General)* Program And Project Management Section (Business » General)* Project Proposal Management System (Business » General)* Process And Production Monitoring System (Business » General)
Abbreviations dictionary. 2012.