said of an animal: to pass seasonally from one region or climate to another for feeding or breeding
said of a person: to move from one country or locality to another
to move or change position
Filarial worms migrate within the human body
in computing, to change from one hardware or software system to another
migration noun
migratory adj
migrational adj
migrator noun
[Latin migratus, past part. of migrare]