#initial-load-header-loader { visibility: hidden!important; } #initial-load-content { visibility: visible!important; } .expandable .expandable-control { display: none!important; } .expandable .expandable-content { display: block!important; visibility: visible!important; max-height: none!important; height: auto!important; }

thermionic tube

SEE MORE SYNONYMS FOR thermionic tube ON THESAURUS.COM

noun Electronics.

a vacuum tube in which the cathode is heated electrically to cause the emission of electrons by thermal agitation.

RELATED CONTENT

What Does 🦚 Peacock Emoji Mean?The peacock emoji is an image of a blue and green peacock, with its tail feathers fanned into a half circle, and in most platforms, the body of the bird is front and center, colored in a rich, sapphire blue.

From The Grammys To The Oscars: The Stories Behind The Names Are you familiar with how your favorite award show got its name?

RELATED WORDS

Nearby words

thermidorian, thermion, thermionic, thermionic current, thermionic emission, thermionic tube, thermionic valve, thermionics, thermistor, thermit, thermite

Origin of thermionic tube

First recorded in 1925–30

Also called hot-cathode tube.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for thermionic tube

thermionic tube

[ thûr′mī-ŏn′ĭk ]

An electrical component, typically an electron tube, through which electric current flows via the emission of thermions from a heated cathode.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.