What does GUM stand for?

Generalized Upper Model

General Utility Mechanic

Genito-Urinary Malignancy (SAUS)

Genito-Urinary Medicine (SAUS)

GIMP- GNU's Not Unix Image Manipulation Program Users Manual (XSAL)

Glavnoye Upravleniye Militsii - Main Administration of Militia - Former USSR (LAIN)

Glavny Universalny Magazin - Department store in USSR

Gosudarstvennyi Universal'nyi Magazin - Government Department Store - Moscow

Grand Unified Monopoles - Cosmology

Guadalajara - Mexico - Seismograph station code, US Geological Survey (SEIS)

Guam - Marianas - Airport symbol (AD)

Guam - ANSI three-letter standard code (CNC)

Guambiano - Language symbol (ETLW)

Guide on the Expression of Uncertainty in Measurement (SAUS)

Gulderand Mining - Vancouver Stock Exchange symbol

Gulf Master - NCIC boat manufacturer code (NCIC)

Gulf Master Inc., Knoxville, AR - Manufacturer code for watercraft hull identification number (USCG)