tetrode
noun
tet·rode ˈte-ˌtrōd 
: a vacuum tube with a cathode, an anode, a control grid, and an additional grid or other electrode
Word History
First Known Use
1886, in the meaning defined above
- Rhizochloridales
- Rhizochrysidales
- rhizoctiniae
- rhizoctinias
- rhizoctonia
- rhizoctonia disease
- rhizoctonias
- rhizoctoniose
- rhizodermis
- Rhizodiniales
- rhizogen
- rhizogenesis
- rhizogenetic
- rhizogenic
- rhizogenous
- Rhizoglyphus
- rhizograph
- rhizoid
- rhizoidal
- rhizoids
- rhizoma
- Rhizomastigina
- rhizomata
- rhizomatic
- rhizomatous