reannex

verb

re·​an·​nex (ˌ)rē-ə-ˈneks 

-ˈa-ˌneks

reannexed; reannexing; reannexes

transitive verb

: to add or acquire back as a territory : to annex again

After a brief period of Spanish control, New Orleans was reannexed by Napoleon …

—James S. Wamsley

reannexation

(ˌ)rē-ˌa-ˌnek-ˈsā-shən 

noun

plural reannexations

the reannexation of formerly independent territories

Word History

First Known Use

15th century, in the meaning defined above