MD

MD, Md, mD or md may refer to:

• Moldova (ISO country code MD)
• Maryland (US postal abbreviation MD)
• Magdeburg (vehicle plate prefix MD), a city in Germany
• Mödling District (vehicle plate prefix MD), in Lower Austria, Austria

• Muhammad (name) or Mohammed (Md)

Music

• Main droite or mano destra (MD or m.d.; "right hand"), in piano scores
• Music director
• Mini Disc

Other arts, entertainment, and media

• MDs (TV series), 2002
• Materiali e discussioni per l'analisi dei testi classici, ("Materials and discussions for the analysis of classical texts"), an Italian journal

• Air Madagascar, IATA airline code
• McDonnell Douglas aircraft model prefix
• MD Helicopters

Biology and medicine

• Doctor of Medicine, a medical degree
• Medial dorsal nucleus, a cluster of neurons in the thalamus
• Muscular dystrophy, a group of diseases involving breakdown of skeletal muscles
• Ménière's disease, a disorder of the inner ear
• MD (Ayurveda), a degree in Indian medicine

Computing

• .md, Internet top-level domain for Moldova
• Markdown (file extension .md), a format
• Microdrive, a type of miniature hard drive
• mkdir or md, "make directory" command
• Multiple device, as in Linux mdadm device driver
• Sega Genesis or Mega Drive, a video game console

Other uses in science and technology

• Mean absolute difference
• Mendelevium, symbol Md, a chemical element
• Mesoscale discussion in Storm Prediction Centers and Weather Prediction Centers
• Methyldichloroarsine, a chemical warfare agent
• Millidarcy (mD), a unit of fluid permeability
• Molecular dynamics
• Membrane distillation
• Earthquake duration magnitude (M_d )

• MD, 1500 in Roman numerals
• Majority decision, in full-contact combat sports
• Managing director, of a company
• Marque déposée or trademark in Canada in Unicode subscripts and superscripts
• Match Director in International Practical Shooting Confederation match
• Military districts of Russia, sometimes abbreviated as MD
• MDMA, sometimes abbreviated as MD