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The Collaborative International Dictionary of English v.0.48 (gcide)

Migrate \Mi"grate\, v. i. [imp. & p. p. {Migrated}; p. pr. & vb.
n. {Migrating}.] [L. migratus, p. p. of migrare to migrate,
transfer.]
[1913 Webster]
1. To remove from one country or region to another, with a
view to residence; to change one's place of residence; to
remove; as, the Moors who migrated from Africa into Spain;
to migrate to the West.
[1913 Webster]

2. To pass periodically from one region or climate to another
for feeding or breeding; -- said of certain birds, fishes,
and quadrupeds.
[1913 Webster]