glow lamp

noun

Electronics.

1. a vacuum tube containing a gas that is ionized by the electrons, giving a visible glow.

glow lamp

noun

1. a small light consisting of two or more electrodes in an inert gas, such as neon, at low pressure, across which an electrical discharge occurs when the voltage applied to the electrodes exceeds the ionization potential

Word History and Origins

Origin of glow lamp¹

First recorded in 1880–85