LAGerei i kolonii (Russian Главное Управление Исправительно—Трудовых Лагерей и колоний, "Main Directorate of Corrective Labour Camps") GUM (a) Glavnyi Universalnyi Magazin (Russian Главный Универсальный Магазин, "Main Department Store"; known in Soviet times as Gosudarstvennyi Universalnyi Magazin/Государственный Универсальный Магазин, "State Department Store") (s) Guam (ISO 3166 trigram) Guide to the expression of Uncertainty in Measurement GUT – (a) Grand Unification Theory GV gv – (s) Manx language (ISO 639-1 code) GV – (s) Gigavolt – Guinea (FIPS 10-4 country code) GW GW – (i) Games Workshop – Germ Warfare – (s) Gigawatt – (i) Guided Weapon – (s) Guinea-Bissau (ISO 3166 digram) GWARS – (p) Ground Warfare System (simulation) GWAS – (p) Grand Western Archery Society GWOT – (i) Global War on Terrorism GWS – (i) Gulf War Syndrome – Greater Western Sydney GX GXA – (p) Global XML Web Services Architecture GXE – (s) Gene–environment interaction GXF – (p) General Exchange Format GXH – (i) IATA code of Gannan Xiahe Airport GXL – (p) Graph eXchange Language GXM – (p) Matrox Graphics eXpansion Module GXP – (p) Grid Exit Point - (i) Global Xchange Programme - (i) Indication of highest performance level on some Pontiac vehicles GxP – (i) Good X Practice (X can mean: clinical, manufacturing, pharmaceutical, etc.) GXY – (i) IATA code of Greeley-Weld County Airport GY GY – (s) Guyana (FIPS 10-4 country code; ISO 3166 digram) GYD – (s) Guyana dollar (ISO 4217 currency code) GYY – (s) Gary/Chicago International Airport (IATA Airport Code) GZ GZ – (s) Gaza Strip (FIPS 10-4 territory code) – (i) Ground Zero GZK – (i) Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies) Acronyms G