annexes; annexed; annexing
: to add (an area or region) to a country, state, etc. : to take control of (a territory or place)
The United States annexed Texas in 1845.
The government planned to annex the islands.
variants
or British annexe
plural annexes
1
: a building that is attached to or near a larger building and usually used as part of it
The addition will be used as an annex to the library.
We store our old files in the annex.
2
chiefly British
: a section or statement added at the end of a document : appendix
an annexe to the document
Cite this Entry
“Annex.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/annex. Accessed 14 Jun. 2026.
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