(verb) move from one country or region to another and settle there; “Many Germans migrated to South America in the mid-19th century”; “This tribe transmigrated many times over the centuries”
(verb) move periodically or seasonally; “birds migrate in the Winter”; “The workers migrate to where the crops need harvesting”
Source: WordNet® 3.1
migrate (third-person singular simple present migrates, present participle migrating, simple past and past participle migrated)
(intransitive) To relocate periodically from one region to another, usually according to the seasons.
• Twice a year the geese migrate — from Florida to Canada and back again.
• Twice a year the Minnesotans migrate from their state to the Gulf of Mexico.
(intransitive) To change one's geographic pattern of habitation.
(intransitive) To change habitations across a border; to move from one country or political region to another.
• To escape persecution, they migrated to a neutral country.
(intransitive) To move slowly towards, usually in groups.
• Once the hosts started bickering in the kitchens, the guests began to migrate towards the living room.
(transitive, computing): To move computer code or files from one computer or network to another.
• They had finished migrating all of the affected code to the production server by 2:00am, three hours later than expected.
(transitive, marketing) To induce customers to shift purchases from one set of a company's related products to another.
Some people consider the jargonistic transitive form of this word to be improper, on the grounds that it is untraditional, and that if a transitive verb is to be constructed from migrate it should still be the subject that is doing the migrating. Alternatives include move, herd, transfer, or relocate. This objection is not widespread however, and migrate is the only term generally used to mean specifically the movement of computer code from one computer to another.
• Tregami, ragtime
Mi"grate, v. i. [imp. & p. p. Migrated; p. pr. & vb. n. Migrating.]
Etym: [L. migratus, p. p. of migrare to migrate, transfer.]
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.
2. To pass periodically from one region or climate to another for
feeding or breeding; -- said of certain birds, fishes, and
Source: Webster’s Unabridged Dictionary 1913 Edition