Разведывательное Управление (Russian, "Main Intelligence Directorate" [of the former Soviet and now Russian armed forces]) GS Gs – (s) Gigasecond GS (i) General Schedule (US civil service pay scale) General Support (s) Gigasiemens South Georgia and the South Sandwich Islands (ISO 3166 digram) GSR – (i) Gun Shot Residue GS-R – (i) General Support-Reinforcing GSA – (i) U.S. General Services Administration GSD – (i) Graphical Situation Display GSG (i) German Sport Guns Global Scenario Group (former environmental research organization) Grenzschutzgruppe (German, "Border Guard Group" — Germany's GSG 9 counterterrorist unit was originally a special branch of the border police) GSGB – (God send glamour boy 9-10/10) GSK – (p) GlaxoSmithKline [good sexual karma] GSM (i) General Service Medal Grams per Square Metre (paper thickness; properly g/m2) Ground Station Module Groupe spécial mobile (French, "Special Mobile Group"; official expansion is now Global System for Mobile Communications) GSN – (a/i) Game Show Network GSO – (i) General Services Officer (U.S. Department of State) GSOH – (i) Good Sense Of Humour GSP – Georges St-Pierre (Canadian MMA fighter) GSS – (i) Generic Security Services GST – (i) Goods and Services Tax (Australia, Canada, and other countries) GSW – (i) Gunshot wound GT GT – (s) Gigatesla – (i) Gran Turismo – Grand Touring – (s) Guatemala (FIPS 10-4 country code; ISO 3166 digram) GTA – (i) Grand Theft Auto GTB – (i) Get to bed, namely to get a new job after a long time of searching, usually following a phone call GTC – (i) Gran Telescopio Canarias (Spanish, Canaries Great Telescope) GTD – (i) Getting Things Done GTFO – "Get the f**k out!" GTG – (i) Good To Go (Internet chat) GTK – (i) Good To Know (Internet chat) GTGN – (i) Getty Thesaurus of Geographic Names GTM – (s) Guatemala (ISO 3166 trigram) GTQ – (s) Guatemalan quetzal (ISO 4217 currency code) GTV – (s) Gross Tumor Volume quetzal (ISO 4217 currency code) GU gu – (s) Gujarati language (ISO 639-1 code) GU – (s) Guam (postal symbol; ISO 3166 digram) GUA – (s) Guatemala (IOC and FIFA trigram, but not ISO 3166) GUF – (s) French Guiana (ISO 3166 trigram) GUI – (a) Graphical user interface ("goo-ey") GUILT – (a) Gangliated Utrophin Immuno Latency Toxin guj – (s) Gujarati language (ISO 639-2 code) GULCR – (i) Grupo de Usuarios de Linux de Costa Rica Gulag – (p) Glavnoye Upravleniye ispravitelno-trudovykh