theory

/ˈθɪə.ɹi/

Proposed by a contributor, not yet supported by evidence.

Also seen as: theories

Sense 1

Meaning · English

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

Nghĩa · Tiếng Việt

Mô tả về một sự kiện hoặc hệ thống được coi là chính xác

Machine-translated — suggest a fix

Noun

Examples

As they encrease the hatred of vice in some, so doe they enlarge the theory of wickednesse in all.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Meaning · English

A coherent statement or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc.

Nghĩa · Tiếng Việt

Tuyên bố hoặc tập hợp ý tưởng hợp lý giải thích các sự kiện hoặc hiện tượng quan sát được

Machine-translated — suggest a fix

Noun

Examples

In its most proper acceptation, theory means the completed result of philosophical induction from experience.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “theory” mean?

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

Is “theory” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.