thermionic valve

Noun thermionic valve has 1 sense

• thermionic valve(n = noun.artifact) electron tube, thermionic tube, thermionic vacuum tube, tube, vacuum tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope;
has particulars: acorn tube, diode, rectifying tube, rectifying valve, electron multiplier, gas-discharge tube, klystron, magnetron, pentode, television-camera tube, television pickup tube, tetrode, triode, x-ray tube
has parts: anode, cathode, electrode, control grid, grid, plate
is a part of circuit, electric circuit, electrical circuit
is a kind of electronic device