Initialism of greater metropolitan area.

plural of GMA pallet

(electronics) Initialism of generalized multi-protocol label switching.

plural of gmina

commune; municipality; township; the smallest administrative territorial division and the first level of regional government in Poland

Abbreviation of Guomindang.

(nautical, aviation) Initialism of Global Maritime Distress and Safety System. (an international set of safety procedures, equipment types, and communication protocols)

Acronym of Graduate Management Admission Test.

(Internet, humorous) Initialism of great minds think alike.

(mineralogy) A rare zeolite mineral related to chabazite.