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Meaning of electrodynamics

e•lec•tro•dy•nam•ics

Pronunciation: (i-lek"trō-dī-nam'iks), [key]
— n. (used with a sing. v.)
  1. the branch of physics that deals with the interactions of electric, magnetic, and mechanical phenomena.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.