Pi (disambiguation)
PI, Pi, pi, or similar, or the Greek letter π, can refer to several things:-
- The Greek letter π.
- The mathematical constant π.
- In mathematics, the capital letter Π is occasionally used as a symbol for the product operator, multiplying the terms of a sequence (compare use of Σ for the summation operator).
- The pi bond, in chemistry.
- The π meson, in physics.
- The movie by Darren Aronofsky, π.
- The capital letter Π is often used to stand for profit in economics.
- pi is typesetting jargon for a random jumble of characters.
- pi is British slang for "preachy" or "goody-goody", from "pious".
- pi is the student rag of UCL.
- Pi is the name used for Piscine Molitor Patel, main character in Life of Pi by Yann Martel.
- pI is an isoelectric point
- PI is an abbreviation for private investigator.
- PI is an abbreviation for principal investigator.
- PI is Privacy International.
- PI is Prussian Instructions (Preußische Instruktionen), a German library cataloguing system used from 1898 until the 1970s.
- PI stands for phosphatidylinositol.
- PI is an abbreviation for pass interference in American football
- PI is an abbreviation for Processing Instruction in SGML and XML.
- PI is Push Initiator in WAP push
- The PI is often used as a colloquial abbreviation for the Philippines.