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From Longman Business Dictionary
Related topics: Telephone, telegraph
GSMGSM noun [uncountable]1TELECOMMUNICATIONSGlobal System for Mobiles; a system that makes it possible for people to use MOBILE PHONES (=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.2abbreviation for GENERAL SALES MANAGER
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