If a country annexes another country or an area of land, it seizes it and takes control of it. Rome annexed the Nabatean kingdom in 106 AD Hitler was determined to annex Austria to Germany. + annexation annexations an·nexa·tion Indonesia's annexation of East Timor
take illegally, as of territory; "The Israelis are annexing more and more territory on the West Bank
an addition that extends a main building attach to take (territory) by conquest; "Hitler annexed Lithuania" take illegally, as of territory; "The Israelis are annexing more and more territory on the West Bank
Annex is the same as annexe. to take control of a country or area next to your own, especially by using force (annexer, from annectere, from ad- + nectere ( NEXUS))