English dictionary, thesaurus, translations & etymology
FreeDict.com
noun

diode

DYE-ohd
Quiz me More like this

Diode (noun) means an electronic component that lets electric current flow in one direction only. Example: “The circuit uses a diode to stop the battery being connected the wrong way round.”

noun
1
technical An electronic component that lets electric current flow in one direction only.
"The circuit uses a diode to stop the battery being connected the wrong way round."
"A diode is often used as a rectifier in a power supply."
"If the diode fails, current may flow in a direction it should not."

How to use diode

Learner’s notes

In plain EnglishA small electronic part that passes current one way and not the other.

When to use it

It is a technical term used in electronics and physics.

Memory tip

Remember that the noun is regular, so the plural is diodes.

Trace the full origin ↓
Common pairings
a rectifier diode connect a diode diode failure
Vocabulary Flow
Build your vocabulary from words like diode.
Vocabulary Flow serves the next word, and the next — meaning, pronunciation and an example each time. Practice at your level, or learn English in your own language.
Start vocabulary practice
Test yourself on “diode” A quick quiz — meaning, synonyms & usage →

Fill the gap

Can you complete this real example?

The circuit uses a _____ to stop the battery being connected the wrong way round.

Etymology

The word was coined in 1919 by William Henry Eccles from di- and -ode. It was modelled on the Ancient Greek word diodos, meaning a passage through.

Origin: English

Rhymes for diode

See all rhymes for diode →

Frequently asked questions

What does a diode do?
A diode allows electric current to flow in one direction only. It is mainly used as a rectifier.
Who invented the word diode?
William Henry Eccles coined the word in 1919.
How do you pronounce diode?
It is said DYE-ohd, with the stress on the first syllable.
What is the meaning of diode?
"diode" (noun) means an electronic component that lets electric current flow in one direction only.