Tetrode

A multi-grid radio valve (or tube) with four electrodes (an anode, cathode, a control grid, and an additional grid-type electrode), commonly used in high-end audio amplifiers etc.
Found on http://www.mhs.ox.ac.uk/marconi/collection/glossary.php

Tetrode

A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two-grid amplifying vacuum tube, also called a screen grid tube. It consists of a sealed evacuated glass envelope containing four electrodes in this order: a cathode heated by a filament, a control grid, a screen grid, and a plate (anode). The tube...
Found on http://en.wikipedia.org/wiki/Tetrode

tetrode

[n] - a thermionic tube having four electrodes
Found on http://www.webdictionary.co.uk/definition.php?query=tetrode

tetrode

noun a thermionic tube having four electrodes
Found on https://www.encyclo.co.uk/local/20974

Tetrode

[biology] A tetrode is a type of electrode used in neuroscience for electrophysiological recordings. They are generally used to record the extracellular field potentials from nervous tissue, e.g. the brain. Tetrodes are constructed by bundling together four very small electrodes; each wire is generally less than 30 ╬╝m in diameter. Tetrodes...
Found on http://en.wikipedia.org/wiki/Tetrode_(biology)

Tetrode

[family] Tetrode, also given as van Tetrode and spelled variously as Tetterode, Tetteroo, Tettero, Thetrode and Tetroe, was a Dutch medieval noble family which later became a prominent patrician family in Holland. The most famous member of this family was the 16th-Century sculptor Willem Danielsz van Tetrode, who hailed from Delft. The coat...
Found on http://en.wikipedia.org/wiki/Tetrode_(family)

tetrode

a four-electrode electronic tube containing an anode, a cathode, a control electrode, and one additional electrode, usually a screen grid
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=531-31-03

Tetrode

A four-electrode tube or transistor. See also: Transistor.
Found on http://www.diracdelta.co.uk/science/source/t/e/tetrode/source.html

Tetrode

A tetrode is an electronic amplifying valve with four main electrodes.
Found on http://www.probertencyclopaedia.com/browse/GT.HTM

tetrode

A thermionic emission tube with four electrodes: cathode, anode, grid, and screen.
Found on http://www-bdnew.fnal.gov/operations/accgloss/gloss.html#A

Tetrode

A thermionic valve with anode, cathode, control grid and screen grid.
Found on http://jot101.com/2015/05/a-z-of-science-fiction-words/

tetrode

tetrode: see electron tube.
Found on http://www.infoplease.com/ce6/sci/A0919482.html

tetrode

vacuum-type electron tube with four electrodes. In addition to the cathode filament, anode plate, and control grid, as in the triode, an additional ... [2 related articles]
Found on http://www.britannica.com/eb/a-z/t/30
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