English · Phrasal verb Attested

open out

In real, traceable use. Part of the curated seed collection; community review is coming.

Sense 1

Both English Tiếng Việt

Meaning · English

To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.

Nghĩa · Tiếng Việt

Mở rộng, giãn rộng, hoặc展开

Machine-translated — suggest a fix

Where it’s used: Used American English

Examples

Once though the station the deep-throated exhaust of G.C.R. engines, and particularly the "Directors", could be heard in ascending crescendo as the drivers opened out to take the gradient.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Sense 2

Both English Tiếng Việt

Meaning · English

To facilitate wider access or expand options.

Nghĩa · Tiếng Việt

Tạo điều kiện truy cập rộng hơn hoặc mở rộng lựa chọn

Machine-translated — suggest a fix

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Sense 3

Both English Tiếng Việt

Meaning · English

To increase the amount of air in an engine, such as by pressing on the accelerator to open a throttle plate or butterfly valve.

Nghĩa · Tiếng Việt

Tăng lượng không khí trong động cơ

Machine-translated — suggest a fix

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “open out” mean?

To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.

Is “open out” formal or informal?

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