ex·pa·tri·ate ( P ) Pronunciation Key (k-sptr-t)
v. ex·pa·tri·at·ed, ex·pa·tri·at·ing, ex·pa·tri·ates
v. tr.
To send into exile. See Synonyms at banish.
To remove (oneself) from residence in one's native land.
v. intr.
To give up residence in one's homeland.
To renounce allegiance to one's homeland.
n. (-t, -t)
One who has taken up residence in a foreign country. One who has renounced one's native land.
adj. (-t, -t)
Residing in a foreign country; expatriated: “She delighted in the bohemian freedom enjoyed by the expatriate artists, writers, and performers living in Rome” (Janet H. Murray).
I had to look it up first time I saw it too.