Definitions by Z Mayes

MA 

Used in MMORPG (e.g. World of Warcraft) to denote who everyone takes their target from. Short for Main Assist

Leeroy will be our MA today so everyone take his target

MA by Z Mayes July 21, 2008

MT

Term used in MMORPG to denote Main Tank. Main Tanks job is to hold aggression(aggro) of a mob while rest of group attacks with the MA ( Main Assist)

Z will be MT during this raid, everyone else follow the MA

MT by Z Mayes July 1, 2005