I know "GUNDAM" stands for something, but I seriously can't remember. Anybody know?

Generation Unsubdued Nuclear Drive Assault Module hoặc General Purpose Utility Non-Discontinuity Augmentation Maneuvering Weapon System hoặc Gigantic Unilateral Numerous Dominating Ammunition hoặc Gunnery United Nuclear Duetrion Advanced Maneuver System hoặc General Unilateral Neuro-Link Dispersive Autonomic Maneuver System all of them from gun series their all right.

GUNDAM stands for: G = generation
U = unsubdued
N = nuclear
D = drive
A = assault
M = module

Generation Unsubdued Nuclear Drive Assault Module:
G - Generation
U - Unsubdued
N - Nuclear
D - Drive
A - Assault
M - Module