What does MUD stand for?

Macromind Utility Disk

Map Unit Description - USDA Forest Service (ALAC)

Master of Urban Design

Master User Directory (MHDI)

Matched Unrelated Donor - Medicine (MELL)

Mednyj Aleut - Language code (ETLW)

Memory Unit Drum - Computer science

Mercaptoundecanol - Organic chemistry

Middle, Up, Down - in game of bridge

Minimum Urticarial Dose - Medicine (DMAA)

Modern Marine, Warminster, PA - Manufacturer code for watercraft hull identification number (USCG)

Mouvement pour l'Unite et la Democratie - Djibouti - Political party (EY)

Mouvement Union Democratique - Democratic Union Movement - Monaco - Political party (PPE)

Multiple User Dimension - Computer science

Multiple-User Domain (SAUS)

Multiple User Dungeon - Computer science

Multi-User Device (ABAC)

Multiuser Dialogue - Computer science (IGQR)

Multi-User Dimension - Computer simulation environment for multi-users (NETL)

Multi-User Domain - Computer science

Multi-User Dungeon - Computer game

Municipal Utility District - Investment term (DFIT)

Murchison Falls - Uganda - Airport symbol (AD)

Murdered - Telegraphy (PCTE)