As An Abbreviation
- Magi
- Magazine (disambiguation), "magazine" in its various meanings
- Magnum (disambiguation)
- Magnet
- Magnification, in optical devices
- Magneto, an engine ignition system component (typically in the context of aviation)
- Magnesium alloy wheels, commonly called 'mags'
- Magnetometer, an instrument for measuring magnetic field strength and direction
- Monoacylglycerol, also known as monoglyceride, a lipid
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