Definitions for ignitronɪgˈnaɪ trɒn, ˈɪg nɪ trɒn
Random House Webster's College Dictionary
ig•ni•tronɪgˈnaɪ trɒn, ˈɪg nɪ trɒn(n.)
a rectifying vacuum tube with an auxiliary electrode projecting into a pool of mercury that conducts current when the anode is positive.
Category: Electronics, Electricity and Magnetism
Origin of ignitron:
1930–35; igni(te)+ -tron
A form of rectifier having a pool of mercury as cathode