Definition of heptode
: a vacuum tube with seven electrodes including a cathode, an anode, a control grid, and four additional grids or other electrodes
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!
Origin and Etymology of heptode
International Scientific Vocabulary hepta- + -ode
Seen and Heard
What made you want to look up heptode? Please tell us where you read or heard it (including the quote, if possible).