glow tube

1. 1.

   a gas-discharge tube consisting of a cold cathode and a diode in a tube filled with gas; the color of the glow depends on the particular gas

   Broadergas-discharge tube

Questions about glow tube

What does glow tube mean?

glow tube means "a gas-discharge tube consisting of a cold cathode and a diode in a tube filled with gas; the color of the glow depends on the particular gas".

Is glow tube a common word?

glow tube is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.