noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A thermionic valve similar to a triode with the addition of a screen grid to improve the thermionic emission.
2. 2
   a thermionic tube having four electrodes wordnet
3. 3
   A dynatron.
4. 4
   A dual-gate MOSFET.

Antonyms

All antonyms

triode

Etymology

From tetr- + -ode.