noun (used with a singular verb)

the branch of physics that deals with the motion of electrically conductive fluids, especially plasmas, in magnetic fields. Abbreviation: MHD

Origin of magnetohydrodynamics

First recorded in 1945–50; magneto- + hydrodynamics
Related formsmag·ne·to·hy·dro·dy·nam·ic, adjectivemag·ne·to·hy·dro·dy·nam·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for magnetohydrodynamics


noun (functioning as singular)

the study of the behaviour of conducting fluids, such as liquid metals or plasmas, in magnetic fields
the generation of electricity by subjecting a plasma to a magnetic field and collecting the deflected free electrons
Abbreviation: MHD
Derived Formsmagnetohydrodynamic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012