Home › Words › A › audionaudionaudion means an early electronic amplifying tube consisting of a partially evacuated glass tube with three electrodes, a heated filament, a grid, and a plate.EtymologyNeologism based on Latin audio (“to hear”).nounAn early electronic amplifying tube consisting of a partially evacuated glass tube with three electrodes, a heated filament, a grid, and a plate.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.autodyne 65% match — A circuit that improved radio signal amplification by means of an audion. vs audion →octode 56% match — A thermionic valve that has eight electrodes or similar elements vs audion →audiphone 56% match — an instrument which, placed against the teeth, conveys sound to the auditory nerve and enables the deaf to hear more or less distinctly. vs audion →amplidyne 56% match — A form of electromechanical amplifier in which an AC motor drives a DC generator vs audion →dynatron 55% match — A tetrode in which the voltage on the screen grid is higher than that on the control grid, causing the plate current to decrease as plate voltage increases; was used in oscillators. vs audion →phanotron 55% match — A kind of rectifier consisting of a thermionic gas tube. vs audion →amplitron 55% match — A form of microwave amplifier. vs audion →nonode 55% match — A thermionic valve that has nine internal electrodes (typically including seven grids) vs audion →