emigration
noun
[ ˌɛmɪˈɡreɪʃn ]
• the act of leaving one's own country to settle permanently in another; moving abroad.
• "mass emigration from Ireland to the United States"
Similar:
moving abroad,
moving overseas,
expatriation,
departure,
withdrawal,
migration,
evacuation,
exodus,
diaspora,
relocation,
resettling,
defection,