PNA or Pna has a variety of meanings:

Science and engineering

* abbreviation for orchid genus ''

Paphinia ''Paphinia'', abbreviated in horticultural trade Pna, is a genus of orchids, composed of an estimated 16 species from Central America, northern South America and Trinidad. These species are medium-sized epiphytes with small ovoid pseudobulbs and ...

'' *

Pacific–North American teleconnection pattern The Pacific–North American teleconnection pattern (PNA) is a climatological term for a large-scale weather pattern with two modes, denoted positive and negative, and which relates the atmospheric circulation pattern over the North Pacific Ocean ...

, a climatic phenomenon *

Parisiensia Nomina Anatomica ''Nomina Anatomica'' (''NA'') was the international standard on human anatomic terminology from 1895 until it was replaced by ''Terminologia Anatomica'' in 1998. In the late nineteenth century some 30,000 terms for various body parts were in use ...

, the revision of anatomic nomenclature *

Peanut agglutinin Peanut agglutinin (PNA) is plant lectin protein derived from the fruits of ''Arachis hypogaea''. Peanut agglutinin may also be referred to as ''Arachis hypogaea'' lectin. Lectins recognise and bind particular sugar sequences in carbohydrates; peanu ...

, a lectin specific for Gal-β(1-3)-GalNAc *

Peptide nucleic acid Peptide nucleic acid (PNA) is an artificially synthesized polymer similar to DNA or RNA. Synthetic peptide nucleic acid oligomers have been used in recent years in molecular biology procedures, diagnostic assays, and antisense therapies. Due to ...

, an artificially synthesized polymer similar to DNA or RNA. * Plastic neutral axis, an engineering value used in plastic

section modulus Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members. Other geometric properties used in design include area for tension and shear, radius of gyration for compression, and second moment ...

* 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 ...

A, a division of the Pottery Neolithic period in archaeology

Organizations

Pakistan National Alliance The Pakistan National Alliance (Urdu: پاکستان قومی اتحاد, Acronym: PNA), was a populist and consolidated right-wing political alliance, consisting of nine political parties of the country. Formed in 1977, the country's leading ...

Palestinian National Authority The Palestinian National Authority (PA or PNA; ar, السلطة الوطنية الفلسطينية '), commonly known as the Palestinian Authority and officially the State of Palestine,

, an administrative autonomous government in parts of the West Bank and the Gaza Strip *

Project for Nuclear Awareness A project is any undertaking, carried out individually or collaboratively and possibly involving research or design, that is carefully planned to achieve a particular goal. An alternative view sees a project managerially as a sequence of even ...

, a non-profit organization that advocates for the abolition of nuclear weapons, co-founded by

John C. Haas John Charles Haas (May 22, 1918 – April 2, 2011) was an American businessman and philanthropist, at one time considered the second richest man in Philadelphia. He was the chairman of global chemical company Rohm and Haas from 1974 to 1978. Under ...

Polish National Alliance The Polish National Alliance ( pol. ''Związek Narodowy Polski'', PNA) is the largest and one of the oldest Polish fraternal organizations in the United States. The original goal was to mobilize support among Polish Americans for the liberatio ...

, a non-profit organization, the largest Polish – American Fraternal Benefit Society in USA offering life insurance and annuities. Founded in 1880, operates solely for the benefit of its members. *

Pa-O National Army The Pa-O National Army ( blk, ပအိုဝ်ႏစွိုးခွိုꩻတပ်မတောႏ, my, ပအိုဝ်းအမျိုးသားတပ်မတော်; abbreviated PNA) is a Pa-O insurgent group in Myanmar (B ...

* ''Partido Nueva Alianza'', the Spanish name for the

New Alliance Party (Mexico) The New Alliance Party ( es, Partido Nueva Alianza, PNA or PANAL) is a state-level (previously national, until 2018) political party in Mexico founded in 2005. Its creation was proposed by the Sindicato Nacional de Trabajadores de la Educación ( ...

Parties to the Nauru Agreement A party is a gathering of people who have been invited by a Hospitality, host for the purposes of socializing, conversation, recreation, or as part of a festival or other commemoration or celebration of a special occasion. A party will oft ...

Pennsylvania NewsMedia Association The Pennsylvania NewsMedia Association is a trade group serving newspapers in Pennsylvania. The PNA seeks to "advance the business interests of Pennsylvania news media companies" and protect the "free and independent press." It represents Pennsylva ...

Philippine Nurses Association The Philippine Nurses Association is a professional organization in the Philippines established to promote the holistic welfare of nurses and to prepare them to be globally-competitive. It used to be known as Filipino Nurses Association (FNA). It ...

* ''Prefectura Naval Argentina'', the Spanish name for the

Argentine Naval Prefecture The Argentine Naval Prefecture ( es, Prefectura Naval Argentina or PNA) is a service of Argentina's Security Ministry charged with protecting the country's rivers and maritime territory. It therefore fulfills the functions of other countries' coa ...

National Anticorruption Directorate The National Anticorruption Directorate ( ro, Direcția Națională Anticorupție (DNA)), formerly National Anticorruption Prosecution Office ( ro, Parchetul Național Anticorupție), is the Romanian agency tasked with preventing, investigating ...

, Romania; formerly, National Anticorruption Prosecution Office (PNA)

Computing

HomePNA The HomePNA Alliance is an incorporated non-profit industry association of companies that develops and standardizes technology for home networking over the existing coaxial cables and telephone wiring within homes, so new wires do not need to be i ...

, a home-computer networking standard *

Personal navigation assistant A Personal Navigation Assistant (PNA) also known as Personal Navigation Device or Portable Navigation Device (PND) is a portable electronic product which combines a positioning capability (such as GPS) and navigation functions. Some PNA devices a ...

(PNA)

Other

Pacific Northern Airlines Western Airlines was a major airline based in California, operating in the Western United States including Alaska and Hawaii, and western Canada, as well as to New York City, Boston, Washington, D.C., and Miami and to Mexico City, London and N ...

, acquired by Western Airlines in 1967 *

Pamplona Airport Pamplona Airport is an airport in Pamplona, Navarra, Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = '' Plus ultra'' (Latin)(English: "Further Beyo ...

* Partial nail avulsion, a treatment of

ingrown toenails An ingrown nail, also known as onychocryptosis from el, ὄνυξ () 'nail' and () 'hidden', is a common form of nail disease. It is an often painful condition in which the nail grows so that it cuts into one or both sides of the paronychium ...

Philippine News Agency Philippine News Agency (PNA) is the official news agency of the Philippine government. PNA is under supervision and control of the News and Information Bureau, an attached agency of the Presidential Communications Operations Office. It was establ ...

Prenuptial agreement A prenuptial agreement, antenuptial agreement, or premarital agreement (commonly referred to as a prenup), is a written contract entered into by a couple prior to marriage or a civil union that enables them to select and control many of the leg ...

, a marriage contract

Science and engineering

Organizations

Computing

Other

See also