NP may refer to:

Arts and entertainment

* ''NP'' (novel), by Japanese author Banana Yoshimoto

Organizations

Nashua-Plainfield Community School District Nashua-Plainfield Community School District (N-P) is a rural, public school district headquartered in Nashua, Iowa. The district, serving Nashua and Plainfield, occupies sections of four counties: Bremer, Butler, Chickasaw, and Floyd. It ...

, Iowa, United States *

National Party (disambiguation) National Party or Nationalist Party may refer to: Active parties * National Party of Australia * Bangladesh: ** Bangladesh Nationalist Party ** Jatiya Party (Ershad) a.k.a. ''National Party (Ershad)'' * California National Party * Nationalist Part ...

, various political parties *

Ngee Ann Polytechnic Ngee Ann Polytechnic (NP) is a post-secondary education institution and statutory board under the purview of the Ministry of Education in Singapore. Established in 1963, the polytechnic is renowned for its business programmes. History Ngee An ...

, Singapore *

Nigeria Police Force The Nigeria Police Force is the principal law enforcement and the lead security agency in Nigeria. Designated by the 1999 constitution as the national police of Nigeria with exclusive jurisdiction throughout the country, as at 2016 it has a s ...

Northern Pacific Railway The Northern Pacific Railway was a transcontinental railroad that operated across the northern tier of the western United States, from Minnesota to the Pacific Northwest. It was approved by Congress in 1864 and given nearly of land grants, whic ...

(AAR reporting mark NP) *

November Project The November Project is a free, open-to-the-public exercise group founded in Boston, Massachusetts, in 2011. The name "November Project" comes from the Google Doc that the founders shared to track their progress in November 2011. While session ...

, free, open-to-the-public exercise group

Places

NP postcode area The NP postcode area, also known as the Newport postcode area,Royal Mail, ''Address Management Guide'', (2004) is a group of eighteen postcode districts, which are subdivisions of fourteen post towns. These cover south-east Wales, including Newp ...

, Newport, Wales, UK *

Nepal Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is mai ...

(ISO 3166-1 alpha-2 country code NP) ** .np, the country code top level domain (ccTLD) for Nepal

Science, technology and mathematics

Biology and medicine

Nucleoside phosphorylase Purine nucleoside phosphorylase, PNP, PNPase or inosine phosphorylase () is an enzyme that in humans is encoded by the ''NP'' gene. It catalyzes the chemical reaction :purine nucleoside + phosphate \rightleftharpoons purine + alpha-D-ribose 1- ...

, an enzyme *

Nurse practitioner A nurse practitioner (NP) is an advanced practice registered nurse and a type of mid-level practitioner. NPs are trained to assess patient needs, order and interpret diagnostic and laboratory tests, diagnose disease, formulate and prescribe m ...

Kallikrein 8 Kallikrein 8 (, ''KLK8'', ''PRSS19'', ''human kallikrein 8'', ''hK8'', ''mK8'', ''ovasin'', ''tumor-associated differentially expressed gene 14'', ''TADG-14'', ''NP'', ''neuropsin'') is an enzyme. This enzyme catalyses the following chemical react ...

, an enzyme *

Neptunium Neptunium is a chemical element with the Symbol (chemistry), symbol Np and atomic number 93. A radioactivity, radioactive actinide metal, neptunium is the first transuranic element. Its position in the periodic table just after uranium, named after ...

, symbol Np, a chemical element *

Nosocomial pneumonia Hospital-acquired pneumonia (HAP) or nosocomial pneumonia refers to any pneumonia contracted by a patient in a hospital at least 48–72 hours after being admitted. It is thus distinguished from community-acquired pneumonia. It is usually caused by ...

Natriuretic peptide A natriuretic peptide is a peptide that induces natriuresis, which is the excretion of sodium by the kidneys. Known natriuretic peptides include the following: * atrial natriuretic peptide, also known as ANP * brain natriuretic peptide, also known ...

Mathematics and computer science

NP (complexity) In computational complexity theory, NP (nondeterministic polynomial time) is a complexity class used to classify decision problems. NP is the set of decision problems for which the problem instances, where the answer is "yes", have proofs ver ...

, Nondeterministic Polynomial, a computational complexity class **

NP-complete In computational complexity theory, a problem is NP-complete when: # it is a problem for which the correctness of each solution can be verified quickly (namely, in polynomial time) and a brute-force search algorithm can find a solution by tryi ...

, a class of decision problems **

NP-hard In computational complexity theory, NP-hardness ( non-deterministic polynomial-time hardness) is the defining property of a class of problems that are informally "at least as hard as the hardest problems in NP". A simple example of an NP-hard pr ...

, a class of problems in computational complexity **

Co-NP In computational complexity theory, co-NP is a complexity class. A decision problem X is a member of co-NP if and only if its complement is in the complexity class NP. The class can be defined as follows: a decision problem is in co-NP precisely ...

, a complexity class * Numpy a Python mathematical library *

Named Pipe In computing, a named pipe (also known as a FIFO for its behavior) is an extension to the traditional pipe concept on Unix and Unix-like systems, and is one of the methods of inter-process communication (IPC). The concept is also found in OS/2 and ...

a method for Inter-Process Communications (IPC)

Physics and chemistry

* NP junction or PN junction in a semiconductor device *

Neper The neper (symbol: Np) is a logarithmic unit for ratios of measurements of physical field and power quantities, such as gain and loss of electronic signals. The unit's name is derived from the name of John Napier, the inventor of logarithms. As ...

(Np), a logarithmic unit for ratios *

, a chemical element with symbol Np *

Power number : For Newton number, see also Kissing number in the sphere packing problem. The power number ''N''p (also known as Newton number) is a commonly used dimensionless number relating the resistance force to the inertia force. The power-number has d ...

(N_p), relating resistance force to inertia force *

Phosphorus nitride Phosphorus nitride refers to several chemical compounds of phosphorus and nitrogen: * Phosphorus mononitride * Tetraphosphorus hexanitride *Triphosphorus pentanitride Triphosphorus pentanitride is an inorganic compound with the chemical formula . ...

Other uses in science and technology

* New Proposal, in the

International Organization for Standardization The International Organization for Standardization (ISO ) is an international standard development organization composed of representatives from the national standards organizations of member countries. Membership requirements are given in Ar ...

(ISO) standardization process *

Not placed A bill of materials or product structure (sometimes bill of material, BOM or associated list) is a list of the raw materials, sub-assemblies, intermediate assemblies, sub-components, parts, and the quantities of each needed to manufacture an end ...

, a term used in printed circuit board design to denote the omitting of a component *

Nanoparticle A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 1 ...

Noun phrase In linguistics, a noun phrase, or nominal (phrase), is a phrase that has a noun or pronoun as its head or performs the same grammatical function as a noun. Noun phrases are very common cross-linguistically, and they may be the most frequently oc ...

, in grammar

Other uses

No problem ''No problem'' is an English expression, used as a response to '' thanks'' (among other functions). It is regarded by some as a less formal alternative to ''you're welcome'', which shares the same function. Informality Some people find the expre ...

* Notary public, post-nominal