glow tube

glow tube
noun
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
Hypernyms: ↑gas-discharge tube

* * *

noun
: a gas-discharge tube (as of the cold-cathode type) that gives light due to electric discharge through a rarefied gas

Useful english dictionary. 2012.

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