# PF

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> Markdown URL: https://mediated.wiki/source/PF.md
> Source: https://en.wikipedia.org/wiki/PF
> Source revision: 1332055223
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**PF** may refer to:

## Arts and entertainment

- [Pianoforte](/source/Pianoforte), full original name of the piano instrument
- [Phineas Flynn](/source/Phineas_Flynn), a fictional character
- [Project Fanboy](/source/Project_Fanboy), a comic book news website
- Peregrine Falcons Squad, a faction in the *[Metal Slug](/source/Metal_Slug)* series of video games

## Businesses

- [PF Flyers](/source/PF_Flyers), a brand of shoes
- [Palestinian Airlines](/source/Palestinian_Airlines) (IATA code PF 1995-2020), a Palestinian airline that operated from Egypt
- [Primera Air](/source/Primera_Air) (IATA code PF 2009-2018), a Danish airline
- [Pell Frischmann](/source/Pell_Frischmann), a multi-disciplinary engineering consultancy

## Economics and finance

- [Pfennig](/source/Pfennig), a unit of currency formerly used in Germany, symbol ₰
- [Provident Fund (disambiguation)](/source/Provident_Fund_(disambiguation)), name of various pension funds

## Language

- [Phonetic form](/source/Phonetic_form), a level of syntactic representation in linguistics
- [Voiceless labiodental affricate](/source/Voiceless_labiodental_affricate) (⟨p̪͡f⟩, ⟨p̪͜f⟩, or ⟨p̪f⟩), a type of consonant sound
- [Pf (digraph)](/source/Pf_(digraph)), a German digraph

## Organizations

- [Pheasants Forever](/source/Pheasants_Forever), a non-profit habitat conservation organization
- [Federal Police](/source/Federal_Police_Department) (*Polícia Federal*), in Brazil
- [Patients' Front](/source/Patients'_Front), a late 1960s to early 1970s West German pro-illness movement
- [South Vietnamese Popular Force](/source/South_Vietnamese_Popular_Force), a local defense militia formed by South Vietnam during the Vietnam War
- [Patriotic Front (disambiguation)](/source/Patriotic_Front_(disambiguation)), name of a political party in several countries

## Places

- [Paracel Islands](/source/Paracel_Islands), FIPS PUB 10-4 territory code
- [French Polynesia](/source/French_Polynesia) (Polynésie française), by ISO 3166 code - [.pf](/source/.pf), internet country code for French Polynesia
- [Pforzheim](/source/Pforzheim) and Enzkreis district, Germany (vehicle plate code PF)

## Science and technology

### Computing

- [.pf](/source/.pf), internet country code for French Polynesia
- [PF (firewall)](/source/PF_(firewall)), OpenBSD's stateful packet filter
- [PF keys](/source/PF_keys), a type of function keys on old keyboards
- [Page fault](/source/Page_fault), a type of exception (error) in computer programming
- [Page file](/source/Page_file), a file used as an extension for computer memory

### Physics

- [Power factor](/source/Power_factor), or cos phi, of an AC electric power system
- [Purple fringing](/source/Purple_fringing), a type of chromatic aberration in photography
- [Phenol formaldehyde resin](/source/Phenol_formaldehyde_resin), the earliest synthetic polymer
- Picofarad (pF) or petafarad (PF), multiples of [farad](/source/Farad), the SI unit of electric capacitance
- [Photon Factory](/source/Photon_Factory), a synchrotron located at KEK in Tsukuba, Japan

### In other sciences and mathematics

- pf(A), the [Pfaffian](/source/Pfaffian) of a matrix A
- [Phenylphosphine](/source/Phenylphosphine), an organophosphorus compound
- *[Plasmodium falciparum](/source/Plasmodium_falciparum)*, a species of Plasmodium that causes malaria in humans
- [Polar front](/source/Polar_front), in meteorology
- [Position fix](/source/Position_fix), a position derived from measuring external reference points
- [Psychometric function](/source/Psychometric_function), an inferential psychometric model
- [Horowitz index](/source/Horowitz_index) (PF), blood oxygenation

## Sports

- [Personal foul (disambiguation)](/source/Personal_foul_(disambiguation)), a type of foul in several sports
- [Power forward (disambiguation)](/source/Power_forward_(disambiguation)), a type of position in several sports

## Other uses

- A US Navy hull classification symbol: [Patrol frigate (PF)](/source/List_of_patrol_vessels_of_the_United_States_Navy#Patrol_frigate_(PF))
- [Pilot flying](/source/Pilot_flying), in commercial aviation, a designation for the pilot in control of an aircraft
- [New Year cards](/source/New_Year_card) with *PF* / *P.F.* or *pour féliciter*, as New Year wishes, since 19th century in Bohemia
- [Procurator fiscal](/source/Procurator_fiscal), the public prosecutor in Scotland
- [Public forum debate](/source/Public_forum_debate), a debate sanctioned by the National Forensic League
- Pekoe Fannings, a [grade of tea leaves](/source/Tea_leaf_grading)

## See also

- [PF1 (disambiguation)](/source/PF1_(disambiguation))

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Adapted from the Wikipedia article [PF](https://en.wikipedia.org/wiki/PF) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/PF?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.