/ Dictionary / Index R Ruhmkorff coil: Meaning and Definition of Find definitions for: Ruhm'korff coil" Pronunciation: (rm'kôrf), [key] — Elect. Elect. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rugulose Ruhr Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language