- millibar; millibars.
- millibarn; millibarns.
- megabit; megabits.
- Manitoba, Canada (approved for postal use).
- megabyte; megabytes.
- Bachelor of Medicine.
- millibar
- megabit
- Bachelor of Medicine
- maternity benefit
- (esp in postal addresses) Manitoba
- (in Canada) Medal of Bravery
- megabyte