Crossword solverSynonyms for electron tube15 crossword answers for “electron tube” (8,4), sorted by letter count.How many letters?All1541517181921011421521621812014 letters 1tube5 letters 1diode7 letters 1pentode8 letters 1klystron9 letters 2acorn tube(5,4)magnetron10 letters 1vacuum tube(6,4)14 letters 2thermionic tube(10,4)rectifying tube(10,4)15 letters 2thermionic valve(10,5)rectifying valve(10,5)16 letters 2electronic device(10,6)gas-discharge tube(3-9,4)18 letters 1electron multiplier(8,10)20 letters 1thermionic vacuum tube(10,6,4)