PI
See also: Appendix:Variations of "pi"
Translingual
Symbol
PI
- (international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for Philippines.
- Synonyms: PH (for general use), RP (1968 Convention)
Usage notes
This is an indeterminately reserved code, included as part of ISO 3166-1 on the request of the Secretary-General of the United Nations due to its use in designating road vehicles under the 1949 Geneva Convention on Road Traffic, and is not endorsed for general use by the ISO. The general-purpose code for the Philippines is PH.
English
Alternative forms
- P.I.
Proper noun
PI
- Abbreviation of Piauí., a state of Brazil.
- Initialism of Prison Industries (the prison-run work program for inmates)
- (US, Philippines, historical, dated) Initialism of The Philippine Islands.
- We're going back to the PI for a vacation this summer.
- Synonyms: PH, PHL, PHI
Noun
PI (countable and uncountable, plural PIs)
- (informatics, SGML, XML) Initialism of processing instruction.
- Initialism of partial induction (see AI)
- Initialism of personal injury.
- Initialism of politically incorrect (see PC)
- Initialism of principal investigator (lead researcher on a grant-funded project)
- Initialism of private investigator.
- (biochemistry) Abbreviation of phosphatidylinositol (a phospholipid component of eukaryotic cell membranes, also abbreviated in PtdIns)
- (pharmacology) Initialism of protease inhibitor.
- (organic chemistry) Initialism of polyimide.
- (medicine) Initialism of ponderal index.
- (electronics) Initialism of power integrity.
- Abbreviation of prohibited immigrant.
- (fan fiction category) Initialism of pseudoincest.
- (automotive) Initialism of port injection. (fuel injection)
- (psychology) Initialism of paradoxical intention.
Related terms
fuel injection
- DI
- TBI
- PFI
- CPI
- CPFI
- SCPI
- MPI
Anagrams
- IP, Ip
Portuguese
Proper noun
PI
- Abbreviation of Piauí. (Brazilian state)
Tagalog
Pronunciation
- IPA(key): /ˈpiʔaj/, [ˈpi.ʔaɪ̯]
Noun
PI (Baybayin spelling ᜉᜁ)
- (vulgar) Initialism of putang ina.