Definition

The study of the physical processes involving the emission of electrons from heated materials.

Example

Thermionics plays a crucial role in the development of vacuum tubes and other electronic devices.

Conversation

Have you ever heard of thermionics?

No, what is that about?

It's the study of how heat affects electrical phenomena.

That sounds really interesting! I would love to learn more about it.

Synonyms & Antonyms

Root Explanation

Thermionics is formed from "therm-" (from Greek "thermos", meaning heat) and "-ionics" (from Greek "ion", meaning going or to go). The term refers to the study of charged particles emitted from heated materials, thus relating to the movement of ions due to heat.

Memory Tip

Think of 'heat' ('therm-') causing particles to 'go' ('ionics') — that's what thermionics is all about.

Visually Confused Words