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Acronym Finder

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In advanced search by entering an abbreviation, you will find all abbreviated states of that term. This section only applies to Latin phrases.

Search result from: PSI

Pounds per Square Inch

Population Services International

Psychiatric Solutions Inc.

Praeger Security International (Santa Barbara, CA)

Public Services International

Product Stewardship Institute

Patient Safety Indicators

Public Sector Information

Policy Studies Institute (UK)

Products and Services, Inc. (various businesses)

Paul Scherrer Institute (Switzerland, Joint Institute of ETH)

Political, Social and International Studies (various locations)

Pet Sitters International

Pressure per Square Inch (measurement)

Psionic

Pre-Shipment Inspection

Proliferation Security Initiative (international treaty with US DoD mission)

Publisher Services, Inc. (Norcross, GA)

Private Sector Involvement

Project Server Interface (Microsoft)

PSi

Performance Studies International

Personal Software Inspector

Performance Systems International

Personal Services Income (taxes)

Perimeter Scholars International (physics; Waterloo, Ontario, Canada)

Plastic Surgery Institute (various locations)

Penn State Industries

Presentence Investigation

Problem-Solving Inventory

Partito Socialista Italiano

Printing Services, Inc. (various locations)

Postpartum Support International

Pre-Sentence Investigation

Patient Safety Institute

Program Specific Information (Television)

Physical Sciences Institute (Illinois)

Permanent Subcommittee on Investigations (US Senate)

Pneumonia Severity Index

Perspectives of System Informatics

Pitchshifter (band)

Programa Nacional para la Sociedad de la Información

Policy Studies Inc (Denver, Colorado)

Protein Structure Initiative

Personalized System of Instruction

Planetary Science Institute

Physical Sciences Inc.

Pollutant Standards Index

Psychological Society of Ireland

Performance Solutions, Inc. (various locations)

Paix et Securite Internationales (French)

Pharmaceutical Society of Ireland

Public Strategies, Inc. (various locations)

Postponing Sexual Involvement

Planned Systems International (Columbia, MD)

Process Safety Information

Product Support Integrator (US Army)

Proteomics Standards Initiative

Phase Shifting Interferometry

Police Sub Inspector

Personnel Security Investigation

Pharmaceutical Security Institute

Potentially Shippable Increment (Agile Software Development)

Promoting Social Inclusion (UK)

Professional Secretaries International

Private Sector Initiatives (Houston, TX)

Plant Sciences Institute

Public Safety Institute

Present Serviceability Index (pavement quality rating)

Professional Services Industries, Inc.

Statisticians in the Pharmaceutical Industry

Public Service Indiana

Pollution Standards Index

Planning Systems Incorporated

Preservation Services, Inc. (various locations)

Patient Safety Initiatives

Photonic Systems, Inc. (Billerica, MA)

Pollution Standard Index

Plant Science Initiative

Platform Solutions, Inc. (Massachusetts)

Product Service Innovation

Principal Security Inspector (aviation)

Program Systems Institute (Russian Academy of Sciences)

Polymer Search on the Internet

Patient Services Incorporated

Pacific Sustainability Index (Claremont McKenna College; Claremont, CA)

Produkte Und Systeme Der Informationstechnologie (German stock company)

Pre-Shift Information (various companies)

Physicians Services Incorporated (Canada)

Programmable Serial Interface

Portuguese Stock Index

Performance Strategies, Inc. (marketing)

Performance Sales International

Pharmaceutical Strategic Initiatives (est. 1985)

Paul-Scherer-Institut (Switzerland)

Printempa Semajno Internacia

Public Service Interpreting

Aktiengesellschaft für Produkte und Systeme der Informationstechnologie

Pedestrian Safety Initiative (various locations)

Project for School Innovation

Protocol State Information

Perception, Systèmes, Information

Philanthropic Service for Institutions

Protein Synthesis Inhibition

Pharmacy Services Inc.

Peripheral Solutions Inc. (Ontario, Canada)

Pakistan Standards Institution

Professional Scuba Inspectors, Inc.

Public Seed Initiative (USDA)

Pinpoint Solutions, Inc. (Steamboat Springs, CO)

Priority Solutions International (various locations)

Professors for a Strong Israel

Psychiatric Society for Informatics

Photon Systems Instruments

Pipeline Systems Inc.

Political and Social Inquiry

Perfectly Scientific Inc.

Panel Source International (Canada)

Packet Switching Interface

Palestine Standards Institution

Philanthropic Studies Index

PHP Simple Informer (network services monitor)

Plasma Source Instrument (NASA)

Para Su Información (Spanish: For Your Information)

Portable Scheme Interpreter

Propagation Systems Inc.

Project Status Inquiry

Production/Sales/Inventory

Program Structure Interface (integrated development environments)

Portable Site Information

Pitch Synchronous Innovation

Parascience International (est. 1976)

Pechersk School International

Process Safety Incident

Pipeline Seal and Insulator, Inc.

Professional Support Inc.

Probabilistic and Statistical Inference

Permanent Staff Instructor (UK military)

Professional Standards Institute

Paranormal Science Investigations

Preliminary Site Inspection

Pokémon Stars Indonesia (fan club)

Poseidon Scientific Instruments Pty Ltd

Process Safety Institute

Partit Socialista de les Illes (Catalan: Socialist Party of the Islands)

Parent Success Initiative

Product Support Initiative

Progressive Structural Inspection (airframe hour based maintenance and overhaul inspection)

Present Situations Index

Projeto de Sistemas de Informação

Pan-Sahelian Initiative

Pre-Screening Interview

Professional Success Institute

Program Security Instruction

Premium Services Infrastructure

Prism Solutions, Inc.

Personal Space Invader

Professional Staff Internship

Personnel Strategies LLC

Paradigm Shift International

Program in the Study of Imagination

Purchase, Sales and Inventory

Partisan Self Identification

Photon Simulation Interface

Process & Systems Integrity

Prestige Software International

Planar Spiral Inductor

Programmable Stratabus Interface

Public Studies Institute

Probability, Statistics and Information

Physical Site Identifier (used to identify a Navy or Marine Corps military installation)

Paranormal Society of Indiana

Pan-Saharan Initiative

PBX Switch Interface

Peripheral System Interconnect

Philosophy Student Initiative

Process Sciences, Incorporated

Primary Shell Integrity

Plan Speed Indicator

Pollution Standard Indicator

Pro Safety International Ltd (UK)

Pilot's Steering Indicator

Programmed School Input

Promotional Services International

Property Standards Index (Australia)

PI Scientific Instrument

President's Security Initiative

Press Services of India (India)

Prior Suspense Item

Pro Salute Imperii (Latin: For Safety of the Empire, epigraphy)

Pico-Second Interval

Personal and Family Safety Information

ProScuba Inc.

Program Support Item/Interest

Product-Specific Sales Incentive

Pleural Space Infection

Parallelization/Standardization/Integration

Programme de Surveillance de l'Irradiation (French: Radiation Monitoring Program)

Programme de Suivi de l'Irradiation (French: Irradiation Monitoring Program)