Francais | English | Espanõl

From Wikipedia, the free encyclopedia

Pi, or π, is the mathematical constant equal to a circle's circumference divided by its diameter.

Pi may also refer to:

• Pi (letter), the Greek letter

  Lowercase π:

  • π (film)
  • π(x), the prime counting function
  • Osmotic pressure
  • A song from the Kate Bush album Aerial
  • Shorthand for pion
  • A men's fragrance from Givenchy
  • Pi bond

  Uppercase Π:

  • The product symbol
• Pi (instrument)
• Pi (.hack)
• Pi Magazine
• The symbol for political life used in Boethius' Consolation of Philosophy
• The abbreviation of the binary prefix pebi
• A song from the Hard'n Phirm album Horses and Grasses
• Sun Air (Fiji)'s IATA airline designator (as PI)

PI is an abbreviation for:

• In science:
  • An inorganic phosphate group (as P_i)
  • The isoelectric point (as pI)
  • Phosphatidylinositol
  • Predictive Index
  • Polyimide
  • Protease inhibitor

• In companies and organizations:
  • Parents for Inclusion
  • Perimeter Institute for Theoretical Physics
  • Piedmont Airlines (1948-1989)
  • Privacy International

• In professional occupations:
  • Photographic interpreter, an aerospace and strategic reconnaissance term
  • Principal investigator
  • Private investigator

• In computing and Internet:
  • Page impressions, an online advertising term
  • Programmed instruction
  • Provider Independent Address Space

• Others:
  • Pass interference in American football
  • Parameter indicator, in ISO standards
  • The Philippines (from "Philippine Islands")
  • Public intoxication
  • Seattle Post-Intelligencer
  • Philippine Idol

[edit] See also

• P
• Pie (disambiguation)

ar:باي

bg:Пи ca:Pi da:Pi de:PI es:Pi eo:Pi fr:Pi (homonymie) ko:PI is:Π (aðgreining) it:PI he:פאי (פירושונים) hu:Pi nl:Pi ja:PI pt:PI sk:Pí fi:Pii sv:Pi