| P&S | Columbia University, College of Physicians and Surgeons 
| Others |
| P&S | Pack and Ship
| Others |
| P&S | Pan and Scan
| Others |
| P&S | Parts and Service
| Others |
| P&S | Perlet & Shiner, P.A., defense attorneys
| Others |
| P&S | Permanent and Stationary
| Others |
| P&S | Physicians and Surgeone
| Others |
| P&S | PIECES & STEMS
| Others |
| P&S | Publish and Subscribe
| Others |
| P.S | Previously Stated
| Others |
| p.s. | written addition to a letter (post script.[Lat.])
| Others |
| P/S | Parallel-to-Serial Converter
| Others |
| P/S | Payload Specialist
| Others |
| P/S | Post Scriptum
| Others |
| P/S | Price-to-Sales ratio
| Others |
| PS | Adobe Postscript document (text/graphics)
| Others |
| PS | And Pss And So
| Others |
| PS | Packet Switch
| Others |
| PS | Pagos Seleccionados
| Others |
| PS | Pain Score
| Others |
| PS | Painfully Sarcastic
| Others |
| PS | Paint Shop
| Others |
| PS | Paleontological Society
| Others |
| PS | Palestine
| Others |
| PS | Palestinian Territories
| Others |
| PS | Palmaz-Schatz
| Others |
| PS | Paola Santiago
| Others |
| PS | Pap Smear
| Others |
| PS | Papillary Serous
| Others |
| Ps | Papulosquamous
| Others |
| PS | Parachute Subsystem
| Others |
| PS | Paradoxical Sleep
| Others |
| PS | Paraffin Section
| Others |
| PS | Parallel Sessions
| Others |
| PS | Parallel Track Single-Unit
| Others |
| PS | Parametric Stereo
| Others |
| PS | Paraspinous
| Others |
| PS | parasympathetic
| Others |
| PS | Parent Shelf
| Others |
| PS | Parliament Soros
| Others |
| PS | Parliamentary Session
| Others |
| PS | Parochial School
| Others |
| PS | Parti Socialiste
| Others |
| PS | Partial Saturation
| Others |
| PS | Partial Seizure
| Others |
| PS | Partial Switch
| Others |
| PS | Particle Size
| Others |
| PS | Partido Socialista
| Others |
| PS | Pashto
| Others |
| ps | Pashto language
| Others |
| PS | Passive Smoking
| Others |
| PS | Pastel Society
| Others |
| PS | Path Separator
| Others |
| PS | Pathological Stage
| Others |
| PS | Pathwork Studies
| Others |
| PS | Patient Survey
| Others |
| PS | Patrick Star
| Others |
| PS | Patriotic Service
| Others |
| PS | Pauline Shirley
| Others |
| PS | Payload Station
| Others |
| PS | Payson Smith Hall, University of Southern Maine
| Others |
| PS | Peach State
| Others |
| PS | Peak Systolic
| Others |
| PS | Peaux Seches
| Others |
| PS | Pedestal Sub
| Others |
| PS | Peer Storage
| Others |
| PS | Peer Support
| Others |
| PS | Penalty Shot
| Others |
| PS | Penicillin Susceptible
| Others |
| PS | Pennsylvania Series
| Others |
| PS | Per Second
| Others |
| PS | Per Spring
| Others |
| PS | Perez Sanz
| Others |
| PS | Perfect Sayings
| Others |
| PS | Perfectly Sane
| Others |
| PS | Performance Score
| Others |
| PS | Performance Space
| Others |
| PS | Performance Spectrum
| Others |
| PS | Performance Standard
| Others |
| PS | Performance Status
| Others |
| PS | Performance Supplement
| Others |
| PS | Period Sydrome
| Others |
| PS | Permanent Slog
| Others |
| PS | Personal Safety
| Others |
| PS | Personal Server
| Others |
| PS | personal service personality scale
| Others |
| PS | Personal Skills
| Others |
| PS | Personal Suffix
| Others |
| PS | Personality Setting
| Others |
| PS | Personalized Setting
| Others |
| PS | Pescara (Provence)
| Others |
| PS | Pet Society
| Others |
| PS | Pfunde Starke
| Others |
| PS | Phantasy Star
| Others |
| PS | Pharmaceutical Services
| Others |
| PS | Phase Space
| Others |
| PS | Philological Society
| Others |
| PS | Philosophers Stone
| Others |
| PS | Phone Service
| Others |
| PS | Phosphatidyl Serine
| Others |
| PS | Phosphorylated Serine
| Others |
| PS | Photo shop
| Others |
| PS | Photometric Sample
| Others |
| PS | Photon Stop
| Others |
| PS | photosensitive
| Others |
| Ps | Photoshop
| Others |
| PS | Photosystem
| Others |
| PS | Phy Science
| Others |
| PS | Physical Science
| Others |
| PS | Physical State
| Others |
| PS | Physical Status
| Others |
| PS | Physical Strength
| Others |
| PS | Physically Sequential
| Others |
| PS | Physics of Sports
| Others |
| PS | Physiologic Saline
| Others |
| PS | Physiological Society
| Others |
| PS | phytosterol
| Others |
| PS | Pico Seconds
| Others |
| ps | Picosecond
| Others |
| PS | Picture Sleeve
| Others |
| PS | Piecewise Smooth
| Others |
| PS | Piercing Slashing
| Others |
| PS | Pink Skies
| Others |
| PS | Pirate School
| Others |
| PS | Pitching Staff
| Others |
| PS | Pittsburg and Shawmut Railroad
| Others |
| PS | Pittsburg and Shawmut Railroad Company
| Others |
| PS | Pituitary Stalk
| Others |
| PS | Plambeck Sietas
| Others |
| PS | Planetary And Solar
| Others |
| PS | Planetary Society
| Others |
| PS | Planning Staff
| Others |
| PS | Plash Speed
| Others |
| PS | Plastic Surgery
| Others |
| PS | Plate Strip
| Others |
| PS | Plating Shop
| Others |
| PS | Play School
| Others |
| PS | PlayStation
| Others |
| PS | Please see
| Others |
| PS | Please Sire
| Others |
| PS | Pluralistic School
| Others |
| PS | Plus subscription
| Others |
| PS | Point Source
| Others |
| PS | Polar Stereographic
| Others |
| PS | Pole Smoker
| Others |
| PS | Police Sergeant
| Others |
| PS | Police Station
| Others |
| PS | Polite Society
| Others |
| PS | Political Skills
| Others |
| PS | Polystyrene
| Others |
| PS | Polzter Surprise
| Others |
| PS | Pompous Sausage
| Others |
| PS | Poor Schumck
| Others |
| PS | Popcorn Shrimp
| Others |
| PS | Population Size
| Others |
| PS | Population Spike
| Others |
| PS | Porous Silicon
| Others |
| PS | Port Sarim
| Others |
| PS | Porter-Silber
| Others |
| PS | Positively Superior
| Others |
| Ps | Positronium
| Others |
| PS | Post Scrip
| Others |
| PS | Post Script
| Others |
| PS | Post Silly
| Others |
| PS | Postmaturity Syndrome
| Others |
| PS | Postscript
| Programming Language |
| PS | Postskriptum
| Others |
| PS | Power Save
| Others |
| PS | Power Setting
| Others |
| PS | Power Solution
| Others |
| PS | Power Solutions
| Others |
| PS | Power Steering
| Others |
| PS | Power Sum
| Others |
| PS | Power Supply
| Others |
| PS | Powershell
| Others |
| PS | Practice Sheet
| Others |
| PS | Pratitya Samutpada
| Others |
| PS | Pre School
| Others |
| PS | Pre Series
| Others |
| PS | Pre Set
| Others |
| PS | Pre Signatorum
| Others |
| PS | Pre-Set
| Others |
| PS | Preference Shares
| Others |
| PS | Premenstal Syndrome
| Others |
| PS | Present Symptoms
| Others |
| PS | Presenting Symptom
| Others |
| PS | Presidential Suite
| Others |
| PS | Pressure Sensitive
| Others |
| PS | Pressure Sore
| Others |
| PS | Pressure Support
| Others |
| PS | Pressure Switch
| Others |
| PS | Prestwood Software
| Others |
| PS | Pretty Smart
| Others |
| PS | Preventative Service
| Others |
| PS | Primary School
| Others |
| PS | Prime Select
| Others |
| PS | Primitive Streak
| Others |
| PS | Princess Sophie
| Others |
| PS | Print Server
| Others |
| PS | Priority Seating
| Others |
| PS | Priority Sector
| Others |
| PS | Private Secretary
| Others |
| PS | Private Sector
| Others |
| PS | Private Stockroom
| Others |
| PS | Pro Series
| Others |
| PS | Probably Something
| Others |
| PS | Problem Set
| Others |
| PS | Problem Sheet
| Others |
| PS | Process Status
| Others |
| PS | Processing Subsystem
| Others |
| PS | Processing System
| Others |
| PS | Processor Sharing
| Others |
| PS | Product Size
| Others |
| PS | Product Standard
| Others |
| PS | Production Sample
| Others |
| PS | Productions Sample
| Others |
| PS | Professional Services
| Others |
| PS | Prognostic Score
| Others |
| PS | Program Specialist
| Others |
| PS | Program Start
| Others |
| PS | Program Stream
| Others |
| PS | Project Studio
| Others |
| PS | Project Superintendent
| Others |
| PS | Property Specification
| Others |
| PS | Proprietary Standards
| Others |
| PS | Protamine Sulphate
| Others |
| PS | Protection and Switchgear
| Others |
| PS | protein S
| Others |
| PS | Protein Society
| Others |
| PS | Proxy Stub
| Others |
| PS | Psssssss Shouldnt
| Others |
| PS | Psychogenic Seizure
| Others |
| PS | Psychometric Society
| Others |
| PS | Psychonomic Society
| Others |
| PS | Psychotropic Substances
| Others |
| PS | Pubertal Stage
| Others |
| PS | Public Safety
| Others |
| PS | Public School
| Others |
| PS | Public Service
| Others |
| PS | Pull Sits
| Others |
| PS | Pulmonary Sarcoidosis
| Others |
| PS | Pulmonary Stenosis
| Disease |
| PS | Pulmonary Surfactant
| Others |
| PS | Pulmonic Stenosis
| Others |
| PS | Pulse Shape
| Others |
| PS | Pulse Shaping
| Others |
| PS | Pumpkin Seeds
| Others |
| PS | Purchase Sale
| Others |
| PS | Pure Stock
| Others |
| PS | Purrfect Spots
| Others |
| PS | Puss Sack
| Others |
| PS | Pyloric Sphincter
| Others |
| PS | Pyloric Stenosis
| Others |
| PS | Pyriform Sinus
| Others |
| PS | Short For PlanetSide
| Others |
| PS | Short For PlayStation
| Others |