noun

• (computer hardware, communication) Initialism of medium-dependent interface.
• (medicine, initialism) Initialism of metered-dose inhaler. [A device that helps to deliver a specific amount of medication to the lungs, usually by supplying a short burst of aerosolized medicine that is inhaled by the patient.]
• (software, graphical user interface) Initialism of multiple document interface.
• (organic chemistry) Initialism of methylene diphenyl diisocyanate.
• (software, graphics) Initialism of Microsoft Document Imaging format.
• (software, navy) Initialism of Mission Data Interface. It's an interface of the NUWC.