DictionarymigrationMovement between regions
noun

migration

my-GRAY-shuhn/maɪˈɡreɪʃn/

Relocation from one inhabited region to another.

The wildebeests' migration carries them from dry grass toward fresh grazing across the river.

A compact herd of five wildebeest travels together in one direction from dry sparse grass toward fresh green grass across a shallow river edge.
Etymology

The action-noun ending turns “move from place to place” into the movement itself. The Latin noun already referred to removal or a change of abode.

In context

Wild Lives7:09
Their migration is not simply a movement from one grazing ground to another. It is a journey through a gauntlet of ice, wind, and predation.
THE GREAT MIGRATION IN ALASKA | The Epic March of the Arctic Caribou – Wildlife Documentary

More examples

  • Drought drives migration from rural areas to cities.
  • Bird migration peaks here in the fall.
  • Some whales make long migrations between feeding and breeding grounds.

Forms

migration · migrations

migrate verb — To move from one region to another.

migratory adjective — Moving periodically from one region to another.

Similar words

relocation
Emphasizes settling somewhere new, without requiring movement between regions.
immigration
Specifically describes entering another country to live there.
emigration
Specifically describes leaving one's country to live elsewhere.