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 large-scale weather pattern with two modes, denoted positive and negative, and which relates the atmospheric circulation pattern over the North Pacific Ocean with the one over the ...

, a climatic phenomenon * Parisiensia Nomina Anatomica, 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; pean ...

, 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 In solid mechanics and structural engineering, section modulus is a geometric property of 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 ...

* Pottery

Neolithic The Neolithic or New Stone Age (from Ancient Greek, Greek 'new' and 'stone') is an archaeological period, the final division of the Stone Age in Mesopotamia, Asia, Europe and Africa (c. 10,000 BCE to c. 2,000 BCE). It saw the Neolithic Revo ...

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 and left political alliance, consisting of nine political parties of the country. Formed in 1977, the country's leadi ...

Palestinian National Authority The Palestinian Authority (PA), officially known as the Palestinian National Authority (PNA), is the Fatah-controlled government body that exercises partial civil control over the Palestinian enclaves in the Israeli-occupied West Bank as a c ...

, an administrative autonomous government in parts of the West Bank and the Gaza Strip * '' Partido Nacional Agrarista'' (National Agrarian Party), a Mexican left-wing agrarian political party founded in 1920 * ''

Partidul Național-Agrar The National Agrarian Party ( or ''Partidul Național-Agrarian'', PNA) was a right-wing agrarian party active in Romania during the early 1930s. Established and led by poet Octavian Goga, it was originally a schism from the more moderate People' ...

'' (National Agrarian Party), a Romanian right-wing agrarian political party active in the 1930s * Project for Nuclear Awareness, a non-profit organization that advocates for the abolition of nuclear weapons, co-founded by John C. Haas *

Polish National Alliance The Polish National Alliance (PNA) ( pol. Związek Narodowy Polski, (ZNP)) 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 libera ...

, 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 (, ; abbreviated PNA) is a Pa-O state sponsored militia in Myanmar (Burma). It was established in 1949 and is the armed wing of the Pa-O National Organisation. The PNA protects the PNO-governed Pa-O Self-Administered Zo ...

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

New Alliance Party (Mexico) The New Alliance Party (, 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 (SNTE, National Union of E ...

* Parties to the Nauru Agreement *

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 Pennsylv ...

* Philippine Nurses Association * ''Prefectura Naval Argentina'', the Spanish name for the

Argentine Naval Prefecture The Argentine Naval Prefecture ( 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' coast guards, and furthermore acts ...

National Anticorruption Directorate The National Anticorruption Directorate (), formerly National Anticorruption Prosecution Office (), is the Romanian agency tasked with preventing, investigating and prosecuting Political corruption, corruption-related offenses (such as bribery, g ...

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

Computing

HomePNA The HomePNA Alliance (formerly the Home Phoneline Networking Alliance, also known as HPNA) is an incorporated non-profit industry association of companies that develops and standardizes technology for home networking over the existing coaxial ca ...

, 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 device ...

(PNA)

Other

Pacific Northern Airlines Western Airlines was a major airline in the United States 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 Mexi ...

, acquired by Western Airlines in 1967 * Pamplona Airport * Partial nail avulsion, a treatment of ingrown toenails *

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

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 before marriage or a civil union that enables them to select and control many of the legal ...

, a marriage contract

Science and engineering

Organizations

Computing

Other

See also