GSM GSM noun [uncountable]
1. TELECOMMUNICATIONS Global System for Mobiles; a system that makes it possible for people to use mobile (= telephones you can carry with you and use in any place):

• France Telecom wanted the Swiss PTT to pay a fee for the use of the French GSM network.

2. abbreviation for General Sales Manager

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GSM UK US /ˌdʒIːesˈem/ noun [S] COMMUNICATIONS
ABBREVIATION for global system for mobile telecommunications: a technical system for mobile phones used in many countries: »

In the early 1990s the EU picked the GSM standard for Europe's mobile networks.

GSM equipment/network/system »

The phone company is expanding their GSM network.


GSM technology/phone/handset

Financial and business terms. 2012.