Annex Definition

To incorporate (territory) into an existing political unit such as a country, state, county, or city.

American Heritage To add to as a condition, consequence, etc. Webster's New World To add or attach, as an attribute, condition, or consequence. American Heritage More Verb Definitions (8) A building added on to a larger one or an auxiliary building situated near a main one. American Heritage Something added on. Webster's New World An addition, such as an appendix, that is made to a record or other document. American Heritage Wiktionary Wiktionary More Noun Definitions (2)

Antonyms:
relinquishment

Other Word Forms of Annex

Noun

Origin of Annex

From Middle English, from Old French annexer (“to join”), from Medieval Latin annexāre, present active infinitive of annexō, frequentative of Latinannectō (“bind to”), from ad (“to”) + nectō (“tie, bind”). From Wiktionary
Middle English annexenfrom Old French annexerfrom Latin annectereannex-to connectad-ad-nectereto bindned- in Indo-European roots From American Heritage Dictionary of the English Language, 5th Edition
Borrowing from Frenchannexe, from Latinannexus. From Wiktionary

Annex Sentence Examples

He occupied Ancona and seemed about to annex the Papal States outright.

It is a custom in the South to build a small house near the homestead as an annex to be used on occasion.

The British flag was hoisted on the 12th of June, and the conditions of the occupation were explained in an annex to the convention, dated the 1st of July.

This model is further explored in the attached annex.

They desired also to annex the coast lands to its east and thus obtain - at Kosi Bay - a seaport of their own.