The meaning of the Acronym GSM is...

GSM is

• Good Shit Man

More Meanings For GSM:

• Global Systems for Mobile (communications)
• Generalized Second Moment
• Geocentric Solar Magnetospheric
• Graduate School Of Management
• Good Source Of Money
• Grenache Shiraz Mourvedre
• God Save Me!
• Sound (GSM 6.10 prI-ETS 300 036 13kbit/s) (Internet phones)
• Global System for Mobile (communications)
• Group Speciale Mobile
• Groupe Speciale Mobile
• General Support Maintenance
• Ground Station Module
• Ground Support Module
• Generic Simulation Manager

GSM is also in:

• Electronics
• File Extensions
• General
• Mathematics
• Meteorology
• Military
• Products
• Religion
• Telecom
• Universities