- NOS
- New Old Stock (Business » General)Not Otherwise Specified (Medical » Physiology)Not Otherwise Specified (Governmental » United Nations)**** National Ocean Service (Academic & Science » Meteorology)**** National Ocean Service (Academic & Science » Ocean Science)**** National Ocean Service (Governmental » US Government)*** Network Operating System (Computing » Telecom)** Nitrous Oxide Systems (Academic & Science » Chemistry)* Nederlandse Omroep Stichting (Business » Firms)* Nitrous Oxide System (Academic & Science » Chemistry)* Now On Sale (Business » Products)* New Original Stock (Business » General)* Not Otherwise Stated (Governmental » US Government)* National Open School (Academic & Science » Universities)* Nation Of Saints (Community » Religion)* Norsk Opsjonssentral (Business » General)* Novell Operating System (Computing » Software)* Nossi- Be, Madagascar (Regional » Airport Codes)* Nature Off Stage (Community » Performing Arts)* Non Operating System (Governmental » Military)* Nine One Six (Governmental » Military)* Non Otherwise Specified (Miscellaneous » Unit Measures)* Nitrogen Oxide System (Academic & Science » Chemistry)* Never Offer Service (Miscellaneous » Funnies)* Nasty Original Stuff (Internet » Chat)* Neonatal Opium Solution (Medical » Hospitals)
Abbreviations dictionary. 2012.