moor - nega
- moor-gallop
- morgeasson
- morget
- morning calm
- morning glory
- morning glow
- morning tide
- morphology
- Morse code
- MOS
- mosaic
- mother-cloud
- mother-current
- mother-of-pearl clouds
- motion
- motion field
- motorboating
- Mount Rose snow sampler
- mountain (pressure) torque
- mountain air
- mountain and valley breezes
- mountain and valley winds
- mountain anemograph
- mountain barometer
- mountain barrier
- mountain breeze
- mountain cap cloud
- mountain climate
- mountain climatology
- mountain fog
- mountain forcing
- mountain glacier
- mountain meteorology
- mountain observation
- mountain physiological effect
- mountain sickness
- mountain station
- mountain torrent
- mountain tundra
- mountain wave
