Wordnet 3.0
NOUN (1)
1.
the study of the interaction of magnetic fields and electrically conducting fluids (as plasma or molten metal);
The Collaborative International Dictionary of English v.0.48:
magnetohydrodynamics \mag*net"o*hy`dro*dy*nam"ics\, n.
The study of the interaction of magnetic fields with
electrically conductive fluids, such as a plasma or a molten
metal.
[WordNet 1.5]
WordNet (r) 3.0 (2006):
magnetohydrodynamics
n 1: the study of the interaction of magnetic fields and
electrically conducting fluids (as plasma or molten metal)