Of or relating to electrons emitted from a substance at very high temperature.
More example sentences
- The thorium dispersion enhances thermionic electron emission, which in turn improves the starting characteristics of gas tungsten arc welding electrodes.
- Electricity can be generated by the thermionic effect, that is, the use of dissimilar metals can cause electrons to flow in the presence of heat.
Definition of thermionic in:
- The British & World English dictionary