noun
emigration
em-ih-GRAY-shuhn/ˌemɪˈɡreɪʃn/
Departure from a country or region to settle elsewhere.
The household’s departure and resettlement show emigration.

Etymology
The pieces describe an act of moving out. Emigration applies that outward movement to leaving a country or region in order to reside elsewhere.
More examples
- The report examined emigration from the region.
- She studied the causes of emigration.
- The archive preserved records of emigration.
Forms
emigration
emigrate verb — leave a country to settle elsewhere
Similar words
- immigration
- Immigration views the move as arrival; emigration views it as departure.
- migration
- Migration is movement generally; emigration specifically concerns leaving to settle elsewhere.