annex

/ˈænɛks/

Proposed by a contributor, not yet supported by evidence.

Also seen as: annexes · annexing · annexed

Sense 1

Meaning · English

An addition, an extension.

NounRegister: US

Examples

6.2.3.2.2. For aircraft having pressurized cabins, the disinsection of cabins and annexes, cockpit and annexes, is to be carried out after the embarkation of passengers and crew and the closing of the doors and windscreen[.]

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

An appendix to a book or document.

NounRegister: US

Sources & notes

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

Sense 3

Meaning · English

To add something to another thing, especially territory; to incorporate.

VerbRegister: US

Examples

The ancient city of Petra was annexed by Rome.

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 4

Meaning · English

To attach or connect, as a consequence, condition, etc.

VerbRegister: US

Examples

to annex a penalty to a prohibition, or punishment to guilt

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 “annex” mean?

An addition, an extension.

Is “annex” formal or informal?

annex is generally US.