MCD, Mcd or mcd may refer to: Science Magnetic circular dichroism, with polarized light Malonyl-CoA decarboxylase, an enzyme involved in fatty acid biosynthesis Mesoscale convective discussion, Storm Prediction Center forecast Millicandela (mcd) or Megacandela (Mcd), units of brightness or light intensity Medical Minimal change disease, a disease of the kidney Multicentric Castleman's disease, a sub-type of Castleman's disease Technology Magnetic chip detector, in engines Maxi single or Maxi single Compact Disc Mega CD, a console by Sega Mini compact disc .mcd, a Mathcad document file Transportation Mackinac Island Airport (IATA airport code), in Michigan, US Merced station (Amtrak) (station code), California, US Moscow Central Diameters, commuter rail system in Moscow, Russia Organisations MCD Productions, an Irish event promoter MCD, an imprint of Farrar, Straus and Giroux McDonald's, restaurant chain, NYSE stock ticker Melbourne College of Divinity Monte Carlo Doualiya, a French public radio service in the Middle East Municipal Corporation of Delhi Other uses 1400 (Roman numerals) M Countdown, a South Korean music TV program Marshall, Carter, and Dark, a fictional firm for trading paranormal wares from the SCP Foundation. Minecraft Dungeons, a video game Minor civil division, a geographical term used by the United States Census Bureau North Macedonia (UNDP code: MCD), a sovereign state in Europe See also Measurement, Calibration and Diagnosis, with the Association for Standardisation of Automation and Measuring Systems