What does MUM stand for?

Maiwala - Language code (ETLW)

Marauder Marine, Murphy, NC - Manufacturer code for watercraft hull identification number (USCG)

Mass Memory Unit Manager (SAUS)

Maximum Useful Magnification (MCD)

Method of Unweighted Means - Statistics

Methodology for Unmanned Manufacture - Robotics project - Japan

Miss You Much - Internet lingo (CHAT)

Multiple Unit Message - Telecommunications (IEEE)

Multiuse Manuscript

Multiuse Mnemonics (IAA)

Multi-User Message (NITA)

Multiuser Monitor

Mumias - Kenya - Airport symbol - Obsolete (OAG)

University of Mississippi, University, MS - OCLC symbol (OCLC)

Chrysanthemum - Horticulture