What does MF stand for?

Membrane Filter

Mandatory Frequency

A frequency designated at selected airports that are uncontrolled during certain hours only. Aircraft operating within the designated MF Area, normally 5NM radius of the airport, must be equipped with a functioning radio capable of maintaining two-way communications. Jeppesen charts list the MF frequency and the area when other than the standard 5NM.

Medically Fragile

Gameplay Multifile

Metafont File

Java Manifest File

Membrane Filtration

Modifying Factor (in Oral Rfd)

Muffin Tin (potential Energy Function)

Major Function