PN may refer to:

Arts and entertainment

* ''

Purple Noon ''Purple Noon'' (french: Plein soleil; it, Delitto in pieno sole; also known as ''Full Sun'', ''Blazing Sun'', ''Lust for Evil'', and ''Talented Mr. Ripley'') is a 1960 crime thriller film directed by René Clément, loosely based on the 1955 nove ...

'', a 1960 film *

Patriotic Nigras The Patriotic Nigras (also known by the initialism PN) were a group of griefers in the online world of ''Second Life''. While the PN were known mainly for the disruption of ''Second Life'' and its users, they had also established themselves on the ...

, a griefing group in the game ''Second Life''

Business and economics

Pacific National Pacific National is one of Australia's largest rail freight businesses. History In February 2002, National Rail Corporation, National Rail's freight operations and rollingstock (owned by the Government of Australia, Federal, Government of New ...

, a rail freight company in Australia *

Participatory notes A participatory note, commonly known as a P-note or PN, is an instrument issued by a registered foreign institutional investor (FII) to an overseas investor who wishes to invest in Indian stock markets without registering themselves with the mar ...

, issued to unregistered overseas investors in Indian stock markets *

Pennsylvania Northeastern Railroad The Pennsylvania Northeastern Railroad is a short-line railroad operating on trackage mostly in Bucks and Montgomery counties to the north of Philadelphia, Pennsylvania. It was created in 2011, taking over former operations from CSX Transporta ...

(reporting mark PN) *

Promissory note A promissory note, sometimes referred to as a note payable, is a legal instrument (more particularly, a financing instrument and a debt instrument), in which one party (the ''maker'' or ''issuer'') promises in writing to pay a determinate sum of ...

, a contract where one party makes an unconditional promise in writing to pay a sum of money to another * West Air (China) (IATA airline code PN)

Organizations

Navies

Pakistan Navy ur, ہمارے لیے اللّٰہ کافی ہے اور وہ بہترین کارساز ہے۔ English language, English: Allah is Sufficient for us - and what an excellent (reliable) Trustee (of affairs) is He!(''Quran, Qur'an, Al Imran, 3:173' ...

Peruvian Navy The Peruvian Navy ( es, link=no, Marina de Guerra del Perú, abbreviated MGP) is the branch of the Peruvian Armed Forces tasked with surveillance, patrol and defense on lakes, rivers and the Pacific Ocean up to from the Peruvian littoral. Addit ...

Philippine Navy The Philippine Navy (PN) ( tgl, Hukbong Dagat ng Pilipinas, , Sea Army of the Philippines) ( es, Armada de Filipinas, , Ejército del Mar de las Filipinas) is the naval warfare service branch of the Armed Forces of the Philippines. It has an e ...

* Portuguese Navy

Political parties

National Renaissance Front The National Renaissance Front ( ro, Frontul Renașterii Naționale, FRN; also translated as ''Front of National Regeneration'', ''Front of National Rebirth'', ''Front of National Resurrection'', or ''Front of National Renaissance'') was a Romani ...

, Partidul Naţiunii, a political party in Romania *

Partit Nazzjonalista The Nationalist Party ( mt, Partit Nazzjonalista, PN) is one of the two major contemporary political parties in Malta, along with the Labour Party. It is a Christian-democratic, and conservative political party, and it has been also described a ...

, a political party in Malta *

Perikatan Nasional The National Alliance ( ms, Perikatan Nasional; abbrev: PN) is a political coalition composed of the Malaysian United Indigenous Party (BERSATU), Malaysian Islamic Party (PAS) and Parti Gerakan Rakyat Malaysia (GERAKAN). This coalition was pr ...

, a political coalition in Malaysia * Partido Nacional (Uruguay), a political party in Uruguay

Places

Penang Penang ( ms, Pulau Pinang, is a Malaysian state located on the northwest coast of Peninsular Malaysia, by the Malacca Strait. It has two parts: Penang Island, where the capital city, George Town, is located, and Seberang Perai on the Malay ...

Pitcairn Islands The Pitcairn Islands (; Pitkern: '), officially the Pitcairn, Henderson, Ducie and Oeno Islands, is a group of four volcanic islands in the southern Pacific Ocean that form the sole British Overseas Territory in the Pacific Ocean. The four isl ...

(ISO 3166-1 country code) *

Palmerston North Palmerston North (; mi, Te Papa-i-Oea, known colloquially as Palmy) is a city in the North Island of New Zealand and the seat of the Manawatū-Whanganui region. Located in the eastern Manawatu Plains, the city is near the north bank of the ...

, a city in New Zealand *

Province of Pordenone The province of Pordenone ( it, provincia di Pordenone; ; vec, provincia de Pordenon) was a province in the autonomous region of Friuli-Venezia Giulia in Italy. Its capital was the city of Pordenone. The province was subdivided from the province ...

, a

province A province is almost always an administrative division within a country or sovereign state, state. The term derives from the ancient Roman ''Roman province, provincia'', which was the major territorial and administrative unit of the Roman Empire ...

in the autonomous region of

Friuli Venezia Giulia (man), it, Friulana (woman), it, Giuliano (man), it, Giuliana (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_t ...

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

Science, technology, and mathematics

Biology

* Parenteral nutrition *

Phylogenetic nomenclature Phylogenetic nomenclature is a method of nomenclature for taxa in biology that uses phylogenetic definitions for taxon names as explained below. This contrasts with the traditional approach, in which taxon names are defined by a '' type'', which ...

, an approach to naming groups of living things

Electronics and computing

* .pn, the country code top level domain (ccTLD) for Pitcairn Islands *

p–n junction A p–n junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor. The "p" (positive) side contains an excess of holes, while the "n" (negative) side contains ...

, a type of junction in electronics

Mathematics

* Path graph of size

n

, denoted by

P_n

* Petri net, one of several mathematical modeling languages for the description of distributed systems * Polish notation, a prefix notation proposed by Jan Łukasiewicz *

Polynomial vector spaces This page lists some examples of vector spaces. See vector space for the definitions of terms used on this page. See also: dimension, basis. ''Notation''. Let ''F'' denote an arbitrary field such as the real numbers R or the complex numbers C. T ...

, denoted by

\mathbb_n

Pseudorandom number sequence A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG), is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers. The PRNG-generate ...

Other uses in science and technology

* Part number, an identifier of a particular part design used in a particular industry *

Particle number The particle number (or number of particles) of a thermodynamic system, conventionally indicated with the letter ''N'', is the number of constituent particles in that system. The particle number is a fundamental parameter in thermodynamics which is ...

, in air-quality measurement *

petanewton The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as 1 kg⋅m/s, the force which gives a mass of 1 kilogram an acceleration of 1 metre per second per second. It is named after Isaac Newton in ...

, a quadrillion

newtons The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as 1 kg⋅m/s, the force which gives a mass of 1 kilogram an acceleration of 1 metre per second per second. It is named after Isaac Newton in r ...

* Planetary nebula, in astronomy *

Post-Newtonian expansion In general relativity, the post-Newtonian expansions (PN expansions) are used for finding an approximate solution of the Einstein field equations for the metric tensor. The approximations are expanded in small parameters which express orders of ...

, an approximation of General Relativity *

Proportional navigation For example, if the line of sight rotates slowly from north to east, the missile should turn to the right by a certain factor faster than the LOS-rate. This factor is ''N''. Proportional navigation (also known as PN or Pro-Nav) is a guidance law ...

, a concept in missile guidance systems * Pseudorandom noise, a deterministic sequence of pulses used in spread spectrum communication and rangefinding *

Phosphorus mononitride Phosphorus mononitride is an inorganic compound with the chemical formula P N. Containing only phosphorus and nitrogen, this material is classified as a binary nitride. It is the first identified phosphorus compound in the interstellar medium. ...

(PN), an inorganic compound found in space

Other uses

* Pottery

Neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts ...

* Proper noun, a linguistic term for the name of an entity * ''

Public News Public News is a Pakistani news channel launched on 24 June 2018 by a Pakistani media mogul Yousaf Baig Mirza. The channel is owned and operated by Sports Star International Private Limited (Sports Star). It is an Urdu language Pakistani televi ...

'', an alternative newspaper in Houston (1982-1998) {{disambiguation