WordNet
glow tube
n. 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 [syn: glow lamp]
Usage examples of "glow tube".
The light pouring down was only that of a single glow tube twenty meters above, but to eyes that had seen nothing but dim redness for hours, it was more glorious than any sunrise.
When their eyes adjusted to the feeble circle of glow tube in the middle of the space they looked around while their host looked at them.
The lock was miserably lighted by a scant three inches of glow tube.