Pronunciation: (mī'grāt),[key] —v.i.,-grat•ed, -grat•ing. 1. to go from one country, region, or place to another.
2. to pass periodically from one region or climate to another, as certain birds, fishes, and animals: The birds migrate southward in the winter. 3. to shift, as from one system, mode of operation, or enterprise to another.
4. Physiol.(of a cell, tissue, etc.) to move from one region of the body to another, as in embryonic development.
5. Chem. a. (of ions) to move toward an electrode during electrolysis.
b. (of atoms within a molecule) to change position.
6. (at British universities) to change or transfer from one college to another.