thermionic tube
21acorn tube — noun a small vacuum tube; used at high frequencies • Hypernyms: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve * * * noun : a very small vacuum tube resembling an acorn in shape and used a …
22electron tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑thermionic valve • Hypernyms: ↑electronic device …
23gas-discharge tube — noun a tube in which an electric discharge takes place through a gas • Hypernyms: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve • Hyponyms: ↑cathode r …
24vacuum tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device …
25television pickup tube — noun a tube that rapidly scans an optical image and converts it into electronic signals • Syn: ↑television camera tube • Hypernyms: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube, ↑ …
26television-camera tube — noun a tube that rapidly scans an optical image and converts it into electronic signals • Syn: ↑television pickup tube • Hypernyms: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube, ↑ …
27hot-cathode tube — /hot kath ohd/, Electronics. See thermionic tube. [1910 15] * * * …
28hot-cathode tube — /hot kath ohd/, Electronics. See thermionic tube. [1910 15] …
29Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
30electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
