thermoelectronics

Etymology
en

Noun

 * 1) The study and use of electrical devices that operate by the thermionic emission of electrons.
 * 2) * 1959, Arden F. Welte, Your Science Fair (page 58)
 * thermoelectronics, along with some of its future uses, such as in heating systems, refrigeration, home cooling units, and automobile power units.