from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A tetrode with grid and plate potentials so arranged that plate current decreases when plate potential increases.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a tetrode in which the voltage on the screen grid is higher than that on the control grid, causing the plate current to decrease as plate voltage increases; was used in oscillators
Greek dunamis, power; see dynamic + -tron.(American Heritage® Dictionary of the English Language, Fourth Edition)