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From Simple English Wikipedia, the free encyclopedia

MD, Md, mD or md may refer to:



  • Major Douglas (1879–1952), British Engineer and pioneer of the Social Credit economic reform movement
  • Muhammad (name) or Mohammed (Md)

Arts, entertainment, and media


  • Main droite or mano destra (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 arts, entertainment, and media

  • MDs (TV series), a 2002 made-for-television medical drama
  • Materiali e discussioni per l'analisi dei testi classici, ("Materials and discussions for the analysis of classical texts"), an Italian classics journal
  • Mega Drive, a game console produced by Sega

Brands and enterprises

  • Air Madagascar (IATA airline code MD)
  • McDonnell Douglas (aircraft model prefix MD), a former aerospace manufacturer that later merged with Boeing

Science and technology

Biology and medicine

  • Doctor of Medicine (MD), from the Latin Medicinae Doctor
  • Medial dorsal nucleus, a large nucleus in the thalamus
  • Muscular dystrophy, a genetic and hereditary muscle disease
  • MD (Ayurveda), a degree in the Indian medical system of Ayurveda


  • .md, Internet top-level domain for Moldova
  • Markdown (file extension .md), a format
  • mdadm (multiple device), a device driver used to support RAID in the Linux kernel
  • Message-digest algorithm, a cryptographic hashing function
  • Microdrive, a type of miniature hard drive
  • mkdir or md, an operating system command to create a directory

Other uses in science and technology

  • Mean absolute difference, a measure of statistical dispersion
  • Mendelevium (Md), a chemical element
  • Mesoscale discussion, a short-term technical meteorological forecast concerning convection; See Storm Prediction Center or Weather Prediction Center
  • Methyldichloroarsine, a blister agent used in chemical warfare
  • Millidarcy (mD), a unit of fluid permeability
  • Molecular dynamics, a method of computer simulation of molecular interaction
  • Membrane distillation, a process of membrane filtration
  • Earthquake duration magnitude (Md )

Other uses

  • MD, 1500 in Roman numerals
  • Majority decision, a winning criterion in several full-contact combat sports
  • Man-day, amount of work performed by the average worker in one day
  • Managing director, a chief executive
  • Marque déposée (MD), an international trademarking symbol in countries where French is the dominant language; See Unicode subscripts and superscripts
  • Match Director (MD), person who handles the overall match administration before, after and during an International Practical Shooting Confederation match
  • Memorial Day

Related pages

  • Medium (disambiguation)
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