/ Dictionary / Index P plasmaphysics: Meaning and Definition of Find definitions for: plas'ma•phys"ics Pronunciation: [key] the branch of physics that deals with plasmas and their interactions with electric and magnetic fields. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plasmapheresis plasmasol Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language