discharge tube

Definitions

General Science

  • noun a tube filled with gas at low pressure that glows on conduction of electricity when a voltage is applied

Electronics

  • A tube containing a low-pressure gas through which a current passes when it is ionized by a sufficient voltage applied between the electrodes of said tube. Also known as electric discharge tube, or gas-discharge tube.
http://www.dictionarycentral.com/definition/discharge-tube.html