What does PI Mean?

Browse 338 acronyms and abbreviations related to PI.

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  • Planetary Image
  • Principal and Interest
  • Patient Initials
  • Product Integration
  • Public Intoxication
  • Permanently Identified
  • Participating Informant
  • Performance Indicator
  • Paternity Index
  • Post Institutionalized
  • Principal Investigator
  • PhotoImpact (digital imaging software)
  • Physician Information
  • Ponderal Index
  • Pentium I (Intel)
  • PCNA (Proliferating Cell Nuclear Antigen) Labeling Index
  • Phase I (clinical studies)
  • Purchasing Instruction
  • Personal Investigator (less common)
  • Perforated Initials (philately)
  • Pisa (Tuscany, Italy)
  • Plant Information (real-time software products such as SCADA)
  • Polyisocyanurate (rigid foam contruction material)
  • Policy Issuance (insurance)
  • Point of Intersection
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