discharge tube

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discharge tube

[′dis‚chärj ‚tüb]
(electronics)
An evacuated enclosure containing a gas at low pressure, through which current can flow when sufficient voltage is applied between metal electrodes in the tube. Also known as electric-discharge tube.
(mechanical engineering)
A tube through which steam and water are released into a boiler drum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.