1. The movement of persons from one country or locality to another
   "The annual migration of workers to the harvest fields"
    
2. A group of people migrating together (especially in some given time period)
   "The Great Migration saw millions of African Americans move from the rural South to urban areas in the North"
    
3. (chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule
   "The migration of the hydrogen atom altered the compound's properties"
    
4. The periodic passage of groups of animals (especially birds or fishes) from one region to another for feeding or breeding
   "The annual migration of monarch butterflies is a spectacular sight"
    
5. (computing) the process of changing from one computing system to another
   "The data migration took several weeks to complete"

Derived forms: migrations

Type of: event, motion, move, movement, people, periodic event, recurrent event

Encyclopedia: Migration