English · Word Candidate

expansion

/ɪkˈspænʃən/

Proposed by a contributor, not yet supported by evidence.

Also seen as: expansions

Sense 1

Both English Tiếng Việt

Meaning · English

An act, process, or instance of expanding.

Nghĩa · Tiếng Việt

Hành động, quá trình hoặc trường hợp mở rộng

Machine-translated — suggest a fix

Noun

The expansion of metals and plastics in response to heat is well understood.

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).

Both English Tiếng Việt

Meaning · English

An act, process, or instance of expanding. — The fractional change in unit length per unit length per unit temperature change.

Nghĩa · Tiếng Việt

Hành động, quá trình hoặc trường hợp mở rộng

Machine-translated — suggest a fix

Noun

Look up the expansion of 1018 steel at stick welding temps and figure out how far this thing's gonna bend once we weld it up.

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).

What does “expansion” mean?

An act, process, or instance of expanding.

Is “expansion” formal or informal?

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