From Wikipedia, the free encyclopedia
PNA or Pna has a variety of meanings:
Science and Engineering
- abbreviation for orchid genus Paphinia
- 4-Nitroaniline - chromogenic substrate, also known as para-Nitroaniline
- Pacific–North American teleconnection pattern, a climatic phenomenon
- Parisiensia Nomina Anatomica - 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 for plastic material.
- Polynuclear Aromatic Hydrocarbons, more commonly: Polycyclic aromatic hydrocarbons (PAHs)
- Programmable Network analyzer (electrical)
- Protected Natural Area (disambiguation)
- Pottery Neolithic A, a division of the Pottery Neolithic period in archaeology
- Pakistan National Alliance
- Palestinian National Authority, an administrative autonomous government in parts of the West Bank
- Project for Nuclear Awareness, a non-profit organization that advocates for the abolition of nuclear weapons by educating the public and policy makers
- Partido Nueva Alianza, the Spanish name for the New Alliance Party (Mexico)
- Parties to the Nauru Agreement
- Pennsylvania Newspaper Association
- Philippine Nurses Association
- Polish National Alliance
- Prefectura Naval Argentina, the Spanish name for the Argentine Naval Prefecture
- Ingrown nail#Nail avulsion (Partial Nail Avulsion), a treatment of ingrown toenails.
- Pneumonia, an infection of the lungs.
Psychiatric Nursing Assistant
- Pacific Northern Airlines
- Pacific-North American teleconnection pattern
- Pamplona Airport
- Philippines News Agency
- Pre-Nuptial Agreement, a marriage contract
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