/ Dictionary / Index A armature reaction: Meaning and Definition of Find definitions for: ar'mature reac"tion Pronunciation: [key] — Elect. Elect. a change in the magnetic field of a dynamo caused by the magnetic field induced by the current flowing through the armature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. armature Armavir Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language