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An electron tube used mostly for signal amplification, consisting of a cathode, an anode, and an intervening wire mesh called a control grid.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Electronics) an electronic valve having three electrodes, a cathode, an anode, and a grid, the potential of the grid controlling the flow of electrons between the cathode and anode. It has been replaced by the transistor
2. (Electronics) any electronic device, such as a thyratron, having three electrodes
[C20: tri- + electrode]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈtraɪ oʊd)

a vacuum tube containing three elements, usu. anode, cathode, and control grid.
[1920–25; tri- + (electr) ode]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.triode - a thermionic vacuum tube having three electrodestriode - a thermionic vacuum tube having three electrodes; fluctuations of the charge on the grid control the flow from cathode to anode which makes amplification possible
electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, vacuum tube, tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
It is essential for [M.sub.1] to remain in triode, hence acting as a transconductance.
The model of the triode is the functional analogy [analogue fonctionnel] of a social structure.
The field of corona triode consisting of parallel ionizing wires, a grounded collecting plane electrode and parallel grid rods between them is analysed in [5] using the finite-element and boundary element methods combined with the method of characteristics.
If a single delay transistor is connected as a diode or a triode (Figure 6), then the output voltage swing is reduced.
Ready, "Oxygenplasma resurrection of triode type carbon nanotube field emission cathodes," Diamond and Related Materials, vol.
Tsai et al., "Polymer space-charge-limited transistor as a solid-state vacuum tube triode," Applied Physics Letters, vol.
Due to the equivalent ac coupling capacitor [C.sub.C] between the input transconductance of the current mirror amplifier and the passive switching core, the transistors in the passive switching core are operated in the deep triode region with [V.sub.DS] = 0.
(268) Lee De Forest, a leading inventor of radio technology, patented a substantial improvement, the oscillating triode, which amplified electrical signals and thus exhibited much greater sensitivity in radio reception.
Each tubular heater is controlled by a bidirectional triode alternating current switch.
A MOSFET acts like a closed switch in the triode state when the following equation is satisfied:
I mean, the bottom line here is musical sound reproduction and it seems odd that a tube amplifier with only 80 wpc (or 40 wpc in the triode mode) and costing three grand would be considered a sensible choice by any music lover, particularly when replacement tubes needed someday will cost $400.
Upwelling temperatures, pH and Eh of the hot springs were measured with an ORION 250A digital pH/Eh/T meter equipped with a pH TRIODE L/M electrode and temperature probe (ORION 9010 TM) and Eh platinum electrode with Ag/AgCl reference electrode (ORION).