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n. (used with a sing. or pl. verb)
The physics of thermionic phenomena.


(Electronics) (functioning as singular) the branch of electronics concerned with the emission of electrons by hot bodies and with devices based on this effect, esp the study and design of thermionic valves


(ˌθɜrm aɪˈɒn ɪks, ˌθɜr mi-)

n. (used with a sing. v.)
the branch of physics dealing with thermionic phenomena.


the science or study of the emission of electrons from substances at high temperatures. — thermionic, adj.
See also: Physics
the science or study of the emission of electrons from substances at high temperatures. — thermionic, adj.
See also: Heat
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thermionics - the branch of electronics dealing with thermionic phenomena (especially thermionic vacuum tubes)
electronics - the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices
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References in periodicals archive ?
Carex Health Brands has acquired the ThermiPaq hot and cold therapy product line from Thermionics Corp.
Thermionics founder Gregg Harwood remarked, "Carex Health Brands has long been respected for many of the same values as ThermiPaq, including quality, value and integrity.
based Niche Products, the national brokerage for Thermionics.
This was unfortunate for another Louis Kaplan, a high-level scientist in the Thermionics Unit at the Camp Evans Signal Laboratories, a facility a few miles south of Fort Monmouth.
A further section considers dreams, which include thermal and salinity gradients, fuel cells, magneto-hydrodynamics, thermionics, artificial photosynthesis, terraforming, off-planet solar, and nuclear power.
net Circle 2296 on reader service card Components/Supplies Thermionics Vacuum Products 231-B Otto St.
has invented a semiconductor technology that converts heat from a wide variety of sources to electrical energy using solid state thermionics.
The technology is based on thermionics, which originated nearly a century ago with the basic vacuum tube, a device that consisted of two parallel conductive plates -- cathode and anode -- separated by a vacuum gap.
Present range simulators such as the MUTES, Mini-MUTES and AN/FSQT22 -- with their conventional thermionics devices, electromechanical positioners and antennas -- cannot reposition fast enough to simulate these radars.
The Russian thermionics technology favors the use of single-crystal refractory metals to improve structural strength with a CVD coating for the emitter surface.
If you want to talk about the most far-out thing ThermoTrex sells, look at thermionics and thermoelectrics, which aim to provide space power for the first manned interplanetary flight.
insists Sp-100's liquid metal heat system is "ahead of thermionics.