Abbreviations & Acronyms Dictionary

Pad Safety Officer
Pakistan Science Office
Pakistan State Oil
Partial Store Order
Partial Store Ordering
Particle swarm optimization
Patient Safety Officer
Payment Service Only
Peace Support Operation
Peace Support Operations
Pearson, Plc
Pending Service Order
Penrith Symphony Orchestra
Performance Support Office
Personal Service Organization
Personnel Security Office
Personnel Services Officer
Personnel Services Operations
Phantasy Star Online
Physician Security Officer
Physician Staff Organization
Pilot Systems Operator
Police Strategic Option
Polymorphic sparteine oxidation
Polysulfone
Poquoson Sheriff's Office
Ports and Shipping Organization
Portsmouth Sheriff's Office
Post Secondary Option
Post security officer
Postman's Sorting Office
Postman's Sub Office
Postprocessed Science Orbit
Postsecondary Options Program
Prague Symphony Orchestra
Presidential Security Office
Pressure shut off
Primary Standardization Office
Primary Storage Optimization
Primary Strike Objective
Primary Support Official
Principal Scientific Officer
Principal Staff Officer
Private Sector Organization
Private Service Operator
Procurement Service Office
Product Superior to Operator
Product Support Organization
Professional Services Organization
Professional Standards Office
Program Secretarial Officer
Program Secretarial Offices
Program Security Officer
Program senior official
Program senior officials
Program Staff Office
Program Staff Officer
Program Support Office
Programme Support Office
Project Science Office
Protective Services Office
Protective Structure Only
Protocol Support Organization
Protocol Supporting Organization
Provider Service Organization
Provider Sponsored Organization
Provider-sponsored Organizations
Provincial Sub-Offices
Provisions supply office
Proximal subungual onychomycosis
Psoralen
Psoriasis
Psychology Student Organization
Public Service Obligation
Public Service Obligations
Pumpkin-seed oil