Meanings
nounCoolidge tube (plural Coolidge tubes)
plural Coolidge tubes
- An improvement on the Crookes tube in which the electrons are produced by thermionic effect from a tungsten filament heated by an electric current.
Synonyms: hot cathode tube
Synonyms & antonyms
nounAn improvement on the Crookes tube in which the electrons are produced by thermionic effect from a tungsten filament heated by an electric current.
Similar
hot cathode tube
Origin
Introduced by William Coolidge in 1913.
Full word history & related roots →Cite this entry
APA
Coolidge tube. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Coolidge%20tube
MLA
“Coolidge tube.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Coolidge%20tube. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Coolidge tube,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Coolidge%20tube.
Source: Coolidge tube on Wiktionary, CC BY-SA 4.0.