There are 2 definitions of gsm in English:

gsm1

Syllabification: gsm

abbreviation

Grams per square meter, a measure of weight for paper: 100 gsm paper

Definition of gsm in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal

There are 2 definitions of gsm in English:

GSM2

Syllabification: GSM

abbreviation

Global System (or Standard) for Mobile, a standardized international system for digital mobile telecommunication.

Definition of gsm in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal