vacuum–tube voltmeter
noun
Definition of vacuum–tube voltmeter
: a voltmeter employing vacuum tubes and useful because of its very high input impedence for measurements in circuits (as vacuum-tube circuits) from which only very small currents can be drawn without altering the voltages being measured
Indulge Your Inner Word Nerd
There's more!
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.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up vacuum–tube voltmeter? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!