| migration | the movement of persons from one country or locality to another |
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| migration | the periodic passage of groups of animals (especially birds or fishes) from one region to another for feeding or breeding |
| migration | (chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule |
| migration | a group of people migrating together (especially in some given time period) |
| migration | the geographic route along which birds customarily migrate |
| migration | of or related to migration |