lugg - mark
- luggage claim
- luggage hold
- lukewarm
- lukewarm water
- lumen
- lumens
- luminance
- luminous dial
- luminous material
- lumped capacity
- lumped resistance
- lumpsum
- lune
- luneberg lens
- lurching
- lute
- lux
- LW
- m
- M-meter
- M-number indicator
- m/hr
- m/hrs
- M1-8 flight characteristics
- macadam runway surface
- Mach
- mach
- mach compensator
- mach feel
- Mach feel mechanism
- Mach feel system
- mach indicator
- Mach number
- mach number
- Mach number indicator
- Mach number meter
- mach speed indicator
- mach trim
- mach trim compensator
- mach trim coupler
