Search Result for "glow tube":
Wordnet 3.0

NOUN (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; 



WordNet (r) 3.0 (2006):

glow tube
    n 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