PI

Look up PI in Wiktionary, the free dictionary.

PI may refer to:

Arts and media

• Politically Incorrect (blog), a German political blog
• Seattle Post-Intelligencer or P-I, a newspaper in the United States
• Primitive Instinct, an English rock band formed in 1987
• P.I. (TV series), 2017 Singaporean TV series

Businesses and organizations

Political parties

• Partido Independiente or Independent Party, a political party in Uruguay
• Partido Intransigente or Intransigent Party, an Argentine political party
• Partit per la Independència, a political party in Catalonia (Spain) of the 1990s

Other businesses and organizations

• Perimeter Institute for Theoretical Physics, a research centre in Ontario, Canada
• Privacy International, a UK-based charity that supports the right to privacy across the world
• Defunct Piedmont Airlines (1948–89) (IATA airline code PI)
• Philadelphia International, record label founded in 1971

Science and technology

Biology and medicine

• Parental investment, in evolutionary biology
• Paternity Index, a value used to calculate probability of paternity
• Pistillata, a gene that influences the development of flowers in the ABC model of flower development
• Phosphatidylinositol, a class of lipids
• Ponderal index, a measure of leanness of a person (similar to body mass index)
• Propidium iodide, a chemical used as a DNA stain
• Primary immunodeficiency
• Protease inhibitor (pharmacology), class of drugs used to treat or prevent infection by viruses, including HIV and Hepatitis C
• Protease inhibitor (biology), molecules that inhibit the function of proteases
• Pulsatility index, a ratio of blood flow rates

Computing

• Persistent identifier, a long-lasting reference to a digital object
• Processing Instruction, an SGML and XML node type
• Programmed instruction, a technology invented to improve teaching
• Provider-independent address space, a type of internet (IP) address

Other uses in science and technology

• Isoelectric point (pI), the pH at which a particular molecule or surface carries no net electrical charge.
• Power integrity, in digital electronics
• PI controller, a concept in automation and control engineering
• Plasticity index, a measure of the plasticity of a soil
• Polyimide, a polymer of imide monomers
• Preußische Instruktionen, a cataloging system for libraries
• Principal investigator, the lead scientist or engineer for a particular project

Other uses

• Pass interference, a foul in American and Canadian gridiron football
• People's Initiative, one of the modes in which the constitution of the Philippines could be amended
• Philippine Islands (P. I.), the commonly used name of the Philippines during the US colonial period
• Pirot, a city located in south-eastern Serbia (license plate code PI)
• Political incorrectness or politically incorrect, commonly abbreviated to PI or PIC
• Pro forma invoice, in business
• Private investigator (P.I.), a person who can be hired to undertake investigations
• Profitability index, the ratio of payoff to investment of a proposed project
• Personal injury

See also

Search for "PI"  or "P-I" on Wikipedia.

• Pi (disambiguation)
• P1 (disambiguation)
• PL (disambiguation)
• All pages with titles containing P-I
• All pages with titles beginning with PI
• All pages with titles containing PI

This disambiguation page lists articles associated with the title PI.
If an internal link led you here, you may wish to change the link to point directly to the intended article.

This page was last edited on 7 November 2023, at 07:05