I. ˌGeneral ˈMotors trademark abbreviation, GM
one of the world's largest car companies, which is based in the US and has factories in many countries. Its makes (=types) of cars and trucks include Chevrolet, Cadillac, Oldsmobile, Pontiac, and Buick, and in Europe, Opel and Vauxhall.

[TahlilGaran] Dictionary of Contemporary English ▲

II. GM /ˌdʒiː ˈem/ adjective British English
(genetically modified) GM foods or plants have had their genetic structure changed so that they are not affected by particular diseases or harmful insects

[TahlilGaran] Dictionary of Contemporary English ▲

gm (plural gm or gms)
the written abbreviation of gram or grams

[TahlilGaran] Dictionary of Contemporary English ▲

GM
General Motors 
Geometric Mean 
Girly Man 
Good Match 
Got Milk? 
Grand Master 
Grotesque Mask (Everquest gaming)

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲