Definitions by Khaetos

Holy trinity 

MMORPG slang for a party combination which includes a damage dealer, damage healer, and damage absorber (tank)
Ex: Chanter, Cleric, Tank
Term most commonly used in everquest, but combination can be found in other MMO's.

World of Warcraft:
Warrior (tank)
Priest (healer)
Mage (damage dealer)

Holy trinity by Khaetos May 13, 2005