noun
Technical term for a vacuum tube that uses a cathode to emit electrons, used in older television and oscilloscope displays.
古いテレビには陰極管が使われていた。
Old televisions used cathode-ray tubes.
More common term for cathode-ray tube, especially in consumer electronics context. 陰極管 is a more formal, technical synonym.
Compound of 陰極 (cathode) and 管 (tube).