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What does PI stand for?

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Rank Abbr.Meaning
PIPhosphate (Inorganic)
PIProtease Inhibitor
PIPlant Industry (Commonwealth Scientific and Industrial Research Organisation; Australia)
PIPackage Insert (medications)
PIPulse Induction
PIPropidium Iodide
PIProportional-Integral (controller)
pIIsoelectric Point (chemistry)
PIPredictive Index
PIBlood Clotting
PIPandemic Influenza
PIPraktische Informatik (German: Applied Informatics)
PIPrimary Immunodeficiency
PIPaedagogisches Institut (Vienna, Austria)
PIProgram Integrity
PIProcess & Instrumentation
PIPulsatility Index
PIPlouffe's Inverter
PIPressure Indicator (industrial control description)
PIPost Inoculation
PIPrecision Instrument
PIProductivity Index (oil and gas well performance)
PIPrediction Interval
PIProductivity Increase
PIPaper Insulated
PIParanoid Ideation
PIPanicle Initiation
PIPhosphorus Index
PIParticular Integral
PIPrime Implicant
PIPrimary Injection
PIProjets Individuels
PIPrimary Investigations
PIPhysicist Interface
PIParameter Indicator
PIPerceptually Impaired
PIPulse Inverter
PIPsykoterapiinstitut (Stockholm, Sweden)
PIPsicología Integrada (Portugese)
PiIonized Phosphorus
PIPallidum Internum
pi[not an acronym] name for Greek symbol representing the ratio of the circumference of a circle to its diameter; approximately 3.1416
PIPaperi-Insinöörit (Finnish: Paper Engineers)
PIPerformance Index
PIPerformance Indicator
PIPerimeter Institute for Theoretical Physics
PIPeripheral Iridotomy
PIPersistently Infected
PIPhase I (clinical studies)
PIPaternity Index
PIPCNA (Proliferating Cell Nuclear Antigen) Labeling Index
PIPenile Implant
PIPhotographic Interpreter
PIPhysically Impaired
PIPhysician Information
PIPremature Infant
PIPrescribing Information (medication)
PIPhysics International
PIPhysik Instrumente
PIPhysikalisches Institut (German: Institute of Physics)
PIPinellas (plant; Florida)
PIPlaque Index (oral hygiene)
PIPlasticity Index
PIPoint of Inflection (engineering)
PIPoison Ivy
PIPolyimide (polymer)
PIPolyisocyanurate (rigid foam contruction material)
PIPolynomial Identity (mathematics)
PIPonderal Index
PIProject Impact (various organizations)
PIPulmonary Infection (lungs)
PIPulmonary Insufficiency (cardiac measurement)

showing only Science & Medicine definitions (show all 206 definitions)

Note: We have 126 other definitions for PI in our Acronym Attic

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