movement from one region to another and often back again, esp. according to the season of the year:
[U]She’s interested in bat migration.
migrationnoun[C or U]
uk/maɪˈɡreɪʃən/us
ECONOMICSthe process of a person or people travelling to a new place or country, usually in order to find work and live there temporarily or permanently:
Higher housing prices will probably slow the migration of workers.
the process of moving or being moved from one place to another:
Outsourcing involves the migration of jobs to areas with low labour costs.
ITthe process of beginning, or of making someone begin, to use a new computer system:
They have announced the date for the migration of customers to the new trading system.
ITthe process of moving software or hardware from one computer system to another:
Our specialty is the migration of software from Windows to Linux (or vice versa).