British vehicle registration for Edinburgh
• airline flight code for Egyptair
• Physics magnetic susceptibility
• (or M/S) mail steamer
• Astronomy main sequence
• Music mano sinistra (Italian: left hand)
• manuscript
• Chem. , Physics mass spectrometer (or spectrometry)
• (USA ) Master of Science
• Master of Surgery
• international vehicle registration for Mauritius
• medical staff
• Photog. medium shot (or mid-shot)
• memoriae sacrum (Latin: sacred to the memory of; on gravestones)
• mess sergeant
• Cartography milestone
• minesweeper
• Meteorol. minus
• US postcode for Mississippi
• Med. mitral stenosis
• Physics Mössbauer spectroscopy
• (or M/S) (USA ) motor ship
• multiple sclerosis
• municipal surveyor