Thermionics
Word Structure
WordHub has a local lexical record for “Thermionics” with pronunciation and root analysis.
therm
heat
Forms: therm
-on
naming noble gases and elementary particles in chemistry and physics, molecules or substances in biology, or general noun suffix indicating an object, state, or instrument
Forms: on
-ics
noun suffix, usually used to form names of arts and sciences
Forms: ics, tics