Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
an early type of radio transmitter that uses the oscillatory discharge of a capacitor through an inductor in series with a spark gap to generate its high-frequency power
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A source of alternating current, especially a now obsolete radio transmitter, that derives its output from the oscillating discharge of a capacitor to an inductor and across a spark gap. Also called spark generator.