What does png stand for?

Persona Non Grata - An Unacceptable Person - Latin (AD)

Penang (AD)

Pacific Northern Gas Ltd. - Toronto Stock Exchange symbol - Vancouver Stock Exchange symbol

Pangasinan - Language code (ETLW)

Papua New Guinea - ANSI three-letter standard code (CNC)

Papua New Guinea Banking Corp.

Papua Nueva Guinea - Papua New Guinea - Spanish (AD)

Paranagua - Brazil - Airport symbol (OAG)

Parque Nacional Guatopo - Guatopo National Park - Venezuela - Spanish (AD)

Partido Nacional Guevarista - Ecuador - Political party (PPW)

Passive Night Goggles - Military (WDAA)

Passive Night-vision Goggles (SAUS)

Paua New Guinea (SAUS)

Pending - Telegraphy (PCTE)

Penghu - Hokoto - Republic of China - Seismograph station code, US Geological Survey (SEIS)

Penicillin G - Medicine (DMAA)

Penn-America Group - NYSE symbol (SPSG)

Percent Normalized Gradient (SAUS)

Persona Non Grata - Unacceptable Person - Latin

Philippine Natural Gum

Piedmont Natural Gas Co., Inc. (EFIS)

Plant Nitrogen in Grain - Harvest nitrogen index

Popondetta - New Guinea - Airport symbol (AD)

Portable Network Graphic - Computer science

Portable Network Graphics - Computer science

Professional Numismatists Guild (EA)

Proportional Navigation Guidance

Pseudo Noise Generator (SAUS)

Pseudonoise Generator

Puerto Rico Air NAtional Guard - FAA designator (FAAC)