What is another word for electron tube?
Pronunciation: [ɪlˈɛktɹɒn tjˈuːb] (IPA) 
An electron tube is also known as a vacuum tube or a thermionic valve. These devices were used as electronic components before the advent of solid-state devices like transistors and diodes. Other synonyms for an electron tube include radio tube, valve tube, or simply tube. The function of these devices was to amplify or switch electronic signals, much like modern-day transistors. Electron tubes come in many different types, such as triodes, tetrodes, and pentodes, each with unique properties that make them suitable for specific applications. Though less commonly used today, electron tubes are still used in some specialized industries, including audio amplification and high-power microwave applications.
