Crossword solverSynonyms for gas-discharge tube10 crossword answers for “gas-discharge tube” (3-9,4), sorted by letter count.How many letters?All103141821011211421512013 letters 1CRT4 letters 1tube8 letters 2glow lamp(4,4)glow tube(4,4)10 letters 1vacuum tube(6,4)12 letters 1electron tube(8,4)14 letters 2thermionic tube(10,4)cathode-ray tube(7-3,4)15 letters 1thermionic valve(10,5)20 letters 1thermionic vacuum tube(10,6,4)