thelernen logothelernen
Start for free

Definition and meaning of English word "theory"

theory

/ˈθɪəri/

Meaning

Noun

A description of an event or system that is considered to be accurate.

Reviewed by the TheLernen language team

How to use

The term 'theory' is often used in scientific and academic contexts. It refers to a well-substantiated explanation for a phenomenon. A common mistake is to use 'theory' loosely, implying a guess or speculation. For example, 'The theory of evolution is widely accepted by scientists.'

🇬🇧 English

theory

Example

It is important to keep the theory in a safe place.

Your personal vocabulary

🦊 Use this word in a live AI conversation

Synonyms

explanationdoctrinemodel

Common phrases

  • scientific theoryscientific theory
  • theory of relativitytheory of relativity
  • evolutionary theoryevolutionary theory

Frequency rank: #1295 in English

🦊

Learn them all! 🚀

Master the 1000 most common English words with smart explanations, audio pronunciation, and spaced repetition.

Start Learning For Free →

No sign-up required

Frequently Asked Questions

What does the English word "theory" mean?

The English word "theory" means "theory" in English.

How do you pronounce the English word "theory"?

You can hear the correct audio pronunciation of the word "theory" by clicking the play button next to the word at the top of this page.

Can I see an example sentence with "theory"?

Yes, here is a practical example: "She chose a new theory yesterday." (which translates as "theory").

More Science & Research words

Related reading