ISO 3166) Gestapo – (p) GEheime STAatsPOlizei (German "secret state police") GeV – (s) Gigaelectron-volt GEV – (i) Ground Effect Vehicle GF GF (s) French Guiana (ISO 3166 digram) Gigafarad GFCF (i) Gluten-free, casein-free diet Gross fixed capital formation GFCI – (i) Ground Fault Circuit Interruptor (aka GFI) GFDL – (i) GNU Free Documentation License GFE (i) Girlfriend experience (used in escort services) Good Faith Estimate Government Furnished Equipment GFI – (i) Ground Fault Interruptor (aka GFCI) GFL – (i) German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation) GFN – (i) Global Footprint Network GFW (i) Global Force Wrestling – either the original incarnation or Impact Wrestling, which was briefly known under the name (p) Great Firewall of China (cf. Internet censorship in China) GFY – (i) "good for you" or "go fuck yourself", depending on the context (Internet chat) GG GG – (s) Georgia (FIPS 10-4 country code) GGK – Good God Karma GGWP – Good Game Well Played GGP (i) General Game Playing GH GH – (s) Ghana (ISO 3166 digram; FIPS 10-4 country code) – Gigahenry GHA – (s) Ghana (ISO 3166 trigram) GHB – (i) gamma-Hydroxybutyric acid GHC – (s) Ghanaian cedi (ISO 4217 currency code) GI Gi – (s) Gibi GI – (i) Galvanised Iron – Gastro-Intestinal – General Issue – (s) Gibraltar (ISO 3166 digram; FIPS 10-4 territory code) – (i) Government Issue - (i) Global Illumination GIB – (s) Gibraltar (ISO 3166 trigram) GIF – (a) Graphics Interchange Format GIG – (a) Global Information Grid GIGN – (i) Groupe d'intervention de la Gendarmerie nationale (French, "National Gendarmerie Intervention Group'), French police tactical unit GIGO – (a) Garbage In Garbage Out (computing) GIMP – (a) GNU Image Manipulation Program GIN – (s) Guinea (ISO 3166 trigram) – (a) Guidelines International Network GIP – (s) Gibraltar pound (ISO 4217 currency code) GIS – (i) Geographic Information System – (i) Google Image Search GISS – (a/i) General Impression of Size and Shape – Goddard Institute for Space Studies GJ GJ – (s) Gigajoule – Grenada (FIPS 10-4 country code) – Gujarat (Indian state code) GJD – (i) Geocentric Julian Day GK GK – (s) Gigakelvin – Guernsey (FIPS 10-4 territory code) GL gl – (s) Galician language (ISO 639-1 code) GL (s) Gigalitre (i) Graphics Language (s) Greenland (ISO 3166 digram; FIPS 10-4 territory code) (i) Grenade