Definition of sparkover



  1. :  a disruptive electric discharge; especially :  an undesired sparking (as in charging a Leyden jar) between two conductors high-voltage generator operating in a pressure chamber to prevent electrical sparkoverScience sparkover potential

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of sparkover

from spark over, verb

Seen and Heard

What made you want to look up sparkover? Please tell us where you read or heard it (including the quote, if possible).


a trip made at another's expense

Get Word of the Day daily email!