a, o, b, e, n, c, h, m, r, t, i, u, v are letters that make 'thermionic vacuum tube'
ER, herm, tube, vacuum tube, vacuum, he, mi, VA, ONI, IC, MI, He, AC, therm, be, ionic, thermion, on, ic, Ionic, thermionic, tub, Io, ion, Ac, Be, Cu, Er, Ni, Th, vac are words within 'thermionic vacuum tube'
1 possible definitions for 'thermionic vacuum tube'
Under this definition, thermionic vacuum tube is a noun and has the following properties:
vacuum tube, thermionic tube, electron tube, tube, thermionic valve have the same meaning as 'thermionic vacuum tube'
'thermionic vacuum tube' can be a type of electronic device.
acorn tube, diode, rectifying tube, rectifying valve, electron multiplier, klystron, pentode, television-camera tube, television pickup tube, tetrode, triode, X-ray tube, gas-discharge tube, magnetron are types of 'thermionic vacuum tube'.
'thermionic vacuum tube' can be a part of circuit, electrical circuit, electric circuit.
anode, cathode, electrode, grid, control grid, plate are parts of 'thermionic vacuum tube'.