MD

MD, Md, mD or md may stand for:

Arts and media

Music

• Main droite/mano destra (abbreviated MD or m.d.), used in piano scores to mark sequences of notes that are to be played with the right hand
• MiniDisc, an optical storage medium developed by Sony
• Music director; the term "MD" is used particularly in musical theatre

Other media

• MDs (TV Series), a 2002 made-for-television medical drama
• Materiali e discussioni per l'analisi dei testi classici, a classics journal
• Mega Drive, a game console produced by Sega

In business

• Managing director, a term used for the chief executive of many companies
• McDonnell Douglas (aircraft mdoel prefix MD), a former aerospace manufacturer that later merged with Boeing
• Air Madagascar (IATA airline code MD)

Places

• Maryland (US postal abbreviation MD)
• Moldova (ISO country code MD)
  • .md, Internet top-level domain for Moldova
• Magdeburg, a city in Germany (vehicle plate prefix)
• Metropolitan Division, a territory unit defined by the US Office of Management and Budget as a county or group of counties within a Metropolitan Statistical Area

Science and technology

Biology and medicine

• Doctor of Medicine, from the Latin Medicinae Doctor (MD)
• Muscular dystrophy, a genetic and hereditary muscle disease
• Medial dorsal nucleus, a large nucleus in the thalamus
• Maladaptive daydreaming, a psychological disorder where excessive daydreaming replaces human interaction

Computing

• .md, Internet top-level domain for Moldova
• "md", alternative form of computer operating system command Mkdir, that creates a directory
• Markdown format (file extension .md)
• Message-digest algorithm, a cryptographic hashing function
• Microdrive, a type of miniature hard drive
• RAID drive in the Linux kernel, also known as "md" for "multiple device"

Other uses in science and technology

• Mean difference, a measure of statistical dispersion
• Mendelevium, a chemical element with symbol Md
• Mesoscale Discussion, a short-term technical meteorological forecast concerning convection (MCD) or precipitation (MPD)
• Methyldichloroarsine, a blister agent used in chemical warfare
• Millidarcy (mD), one thousandth of a darcy, a unit of fluid permeability
• Molecular dynamics, a method of computer simulation of molecular interaction

Other uses

• Majority decision, a winning criterion in several full-contact combat sports
• Man-day, amount of work performed by the average worker in one day
• Major Douglas, a British Engineer and pioneer of the Social Credit economic reform movement
• Muhammad (name) or Mohammed, as abbreviated in Bangladesh, India, Pakistan and South East Asia

See also

• Medium (disambiguation)