- PNA
- Peptide Nucleic Acid (Medical » Human Genome)* Personal Navigation Assistant (Computing » Hardware)* Pacific/ North American (Academic & Science » Ocean Science)* Palestine National Authority (Governmental » US Government)* Palestine News Agency (Community » Media)* Polish National Alliance (Governmental » US Government)* Pamplona, Spain (Regional » Airport Codes)* Progressive Neuronal Abiotrophy (Medical » Physiology)* Phone Network Alliance (Computing » Telecom)* Pacific North Atlantic (Academic & Science » Ocean Science)* Passed Not Advanced (Governmental » Military)* Patronato Nacional Antituberculoso (Community » Non-Profit Organizations)* Pacific Northwest Associates, LLC (Business » Firms)
Abbreviations dictionary. 2012.