Definition

A type of vacuum tube that has four main components: an anode, a cathode, a control grid, and an extra electrode, used in electronic circuits.

Example

The radio engineer replaced the faulty tetrode to improve the signal quality.

Conversation

Hey, have you ever heard of a tetrode?

No, I haven't. What is it?

It's actually a type of vacuum tube with four elements.

That sounds interesting! I didn't know there were that many parts.

Synonyms & Antonyms

Root Explanation

**Tetrode** → It is formed from "tetra-" (from Greek *tetra*, meaning four) and "-ode" (from Greek *hodos*, meaning way or path). The word "tetrode" refers to a device or component that has four electrodes, thus relating to the concept of four paths or ways for electrical conduction.

Memory Tip

Think of 'four' ('tetra-') paths or connections in a device, which helps you remember that a tetrode has four electrodes.

Visually Confused Words