PPI

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PPI may refer to:

Video PPI

Biochemistry

• PP_i, the anion P₂O₇^4-, a pyrophosphate
• A type of polyproline helix
• Protein-protein interaction

Maps PPI

Indicators and indexes

• Pareto priority index, to prioritize projects
• Plan position indicator, radar display
• Producer price index

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Medicine

• Prepulse inhibition of a later pulse
• Proton-pump inhibitor, of gastric acid secretion
• Psychopathic Personality Inventory, a personality test
• Psychophysiological Interaction, fMRI analysis technique

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Organizations

• Italian People's Party (1919) (Partito Popolare Italiano), a Christian-democratic party
• Italian People's Party (1994) (Partito Popolare Italiano), a Christian-democratic party
• Peace Party of India, Uttar Pradesh
• Philips Phonographische Industries, later Philips Records
• Phonographic Performance (Ireland) Limited
• Pirate Parties International, organisation for Pirate Parties
• Polly Peck International, UK company collapsed in 1991
• Primarily Primates, primate sanctuary, Texas, US
• Progressive Policy Institute, a U.S. public policy think tank

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Technology

• Parallel Peripheral Interface of the Blackfin processor
• Programmable Peripheral Interface, Intel 8255 chip
• Gabarit passe-partout international, Berne gauge in railways
• Picks per inch, a unit of textile measurement
• Pixels per inch of an image device

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Astronomy

• Pulsational pair-instability supernova

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Other uses

• Payment protection insurance
• Positive polarity item
• Pakistan Press International

Source of the article : Wikipedia