PNA or Pna has a variety of meanings:

Science and engineering

* abbreviation for orchid genus '' Paphinia'' *

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, a lectin specific for Gal-β(1-3)-GalNAc * Peptide nucleic acid, 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 A, a division of the Pottery Neolithic period in archaeology

Organizations

* Pakistan National Alliance * Palestinian National Authority, 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 * Polish National Alliance, 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) *

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 * ''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, 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, acquired by Western Airlines in 1967 * Pamplona Airport * 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 * Prenuptial agreement, a marriage contract

Science and engineering

Organizations

Computing

Other

See also