/ Dictionary / Index U unified field theory: Meaning and Definition of Find definitions for: u'nified field' the"ory Pronunciation: [key] — Physics. Physics. See any field theory, esp. Einstein's, that attempts to combine the gravitational and electromagnetic fields in a single mathematical framework, thus extending the general theory of relativity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Unification Church unifilar Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language