D50

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D50, D-50 or D 50 may refer to:

  • CIE Standard Illuminant D50, a lighting standard used in colorimetry, and also in graphic design as a white point
  • D50, in particle size distribution measurements, the mass-median-diameter, considered to be the average particle size by mass.
  • D50 (radiotherapy), the half maximal inhibitory dose, representing the dose of light or ionising radiation that is required for 50% inactivation of a tumor cell population
  • D50 road (Croatia), a state route
  • Dodge D50, a compact pickup truck marketed by Chrysler and based on the Mitsubishi Triton
  • the ICD-10 code for iron deficiency anemia
  • An intravenous sugar solution of 50% dextrose
  • Invisible D50, a keyboard stand
  • JNR Class D50, a pre-war Japanese steam locomotives class related to the D60 steam locomotive class
  • Lancia D50, a Formula One racing car driven by Juan Manuel Fangio to win the 1956 World Driver's Championship
  • New South Wales D50 class locomotive, a NSWGR steam locomotive
  • Nikon D50, an entry-level digital SLR camera
  • Roland D-50, a digital synthesizer
  • D50 (film), working title for a Tamil-language film