[ ig-nahy-tron, ig-ni-tron ]
/ ɪgˈnaɪ trɒn, ˈɪg nɪ trɒn /
a cathode-arc vacuum tube with an auxiliary electrode projecting into a pool of mercury: it conducts current when the anode is positive.
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Words nearby ignitron
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for ignitron
/ (ɪɡˈnaɪtrɒn, ˈɪɡnɪˌtrɒn) /
a mercury-arc rectifier controlled by a subsidiary electrode, the igniter, partially immersed in a mercury cathode. A current passed between igniter and cathode forms a hot spot sufficient to strike an arc between cathode and anode
Word Origin for ignitron
C20: from igniter + electron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012