### We've got **159** definitions for **PI** »

# What does **PI** stand for?

#### What does **PI** mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: **PI**.

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Term |
Definition |
Rating |

PI | Post Intelligencer | |

PI | Principal Investigator | |

PI | Personal Information | |

PI | Performance Index | |

PI | Protease Inhibitor | |

PI | Personal Injury | |

PI | Propidium Iodide | |

PI | Program Improvement | |

PI | Private Investigator | |

PI | Public Information | |

PI | Pages In | |

PI | Performance Improvement | |

PI | Primary Investigator | |

PI | Performance Indicator | |

PI | Polyimide | |

PI | Processing Instruction | |

PI | Proportional Integral | |

PI | Programming Interface | |

PI | Process Information | |

PI | Public Instruction | |

PI | Public Involvement | |

PI | Platform Independent | |

PI | Plant Information | |

PI | Principle Investigator | |

PI | Philippine Islands | |

PI | Post Injection | |

PI | Pocket Informant | |

PI | Precision Instruments | |

PI | Plant Introduction | |

PI | Position Independent | |

PI | Portfolio Investment | |

PI | 3.1415926535 | |

PI | Process Innovation | |

PI | Project Inform | |

PI | Photo Impact | |

PI | Product Improvement | |

PI | Provider Independent | |

PI | Phosphate Ion | |

PI | Per Inquiry | |

PI | Project Idea | |

PI | Page Impression | |

PI | Processor Interface | |

PI | Packet Interface | |

PI | Policy Iteration | |

PI | Protocol Interpreter | |

PI | Path Identifier | |

PI | Penile Implant | |

PI | Population Institute | |

PI | Paranormal Investigator | |

PI | Parity Inner | |

PI | Present illness | |

PI | Pyramid Inch | |

PI | Pulmonary Insufficiency | |

PI | Pulse Induction | |

PI | Presence Information | |

PI | Property Inspector | |

PI | Paternity Index | |

PI | Physician Investigator | |

PI | Post Institutionalized | |

PI | Premdor, Inc. | |

PI | Permanently Identified | |

PI | Plan Internacional | |

PI | Power Intelligence | |

PI | Polarisation Index | |

PI | Political Informant | |

PI | Program Integrator | |

PI | Pure Integrity | |

PI | Priceless Inn | |

PI | Priority Inherit | |

PI | Preliminary Index | |

PI | Power Investiture | |

PI | Pure Imported | |

PI | Pilipino Insurrecto | |

PI | Publications Inquiry | |

PI | Problem Investigator | |

PI | Pool Instructor | |

PI | Paducah and Illinois Railroad | |

PI | Pareto Improved | |

PI | Phantom Investigator | |

PI | Participating Informant | |

PI | Post Inaccrochable | |

PI | Patternology International | |

PI | Pengajian Inggeris | |

PI | Perpetual Idiosy | |

PI | Pisa (Provence) | |

PI | Proforma Invoice | |

PI | Pre-Invoice | |

PI | Public Intoxication | |

PI | Police Inspector | |

PI | Public Inquiry | |

PI | Process Intelligence | |

PI | Power Improved | |

PI | Partnership for Innovation | |

PI | Principal and Interest | |

PI | Parent Involvement | |

PI | Perfusion Index | |

PI | Perpetual Inventory | |

PI | Par Interim | |

PI | Path Identification | |

PI | Patient Initials | |

PI | Pen and Ink (Document Update) | |

PI | Perfectly Incomplete | |

PI | Performance Improved | |

PI | Perfusion Imaging | |

PI | Perlite Institute | |

PI | Personal Investigator | |

PI | Petrol Injection | |

PI | Phosphatidyl Inositol | |

PI | Planetary Image | |

PI | Police Informant | |

PI | Prison Industries | |

PI | Product It | |

PI | Professionalism and Integrity | |

PI | Purchasing Instruction | |

PI | Pacific Islander | |

PI | Package Insert | |

PI | Pain Intensity | |

PI | Pancreatic Insufficiency | |

PI | Parallel Imports | |

PI | Paramagnetic Insulator | |

PI | Pars Intermedia | |

PI | Payload Interrogator | |

PI | Payment Instrument | |

PI | Pearl Index | |

PI | Penal Interest | |

PI | Penalty Indicator | |

PI | Penning ionization [ | |

PI | Perimeter Institute for Theoretical Physics | |

PI | Peripheral Iridectomy | |

PI | Physically Impaired | |

PI | Physiologic Index | |

PI | Piaui | |

PI | pituitary | |

PI | Plaque Inhibition | |

PI | Point of Impact | |

PI | Poison Ivy | |

PI | Post Implantation | |

PI | Post Infection | |

PI | Post Inoculation | |

PI | Post Irradiation | |

PI | Post Ischaemic | |

PI | Postal Inspectors | |

PI | Preliminary Investigation | |

PI | Prepaid Interest | |

PI | Primary Infection | |

PI | Primary Instructor | |

PI | Probability of Incapacitation | |

PI | Procedural Item | |

PI | Procurement Item | |

PI | Product Information | |

PI | Product Innovation | |

PI | Product Integration | |

PI | Prognostic Index | |

PI | Program Introduction | |

PI | Proliferation Index | |

PI | Pulmonary Index | |

PI | Pulmonary Infarction | |

PI | Pulse Inversion | |

PI | Purposeful Interference |

#### What does **PI** mean?

- pi(noun)
- the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...

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"PI." *Abbreviations.com.* STANDS4 LLC, 2019. Web. 19 Oct. 2019. <https://www.abbreviations.com/PI>.