migration
definition: the movement of persons from one country or locality to another
example:
speech part: noun
synonyms:
definition: the periodic passage of groups of animals, especially birds or fishes, from one region to another for feeding or breeding
example: Migration is integral to the survival of many species.
speech part: noun
synonyms:
definition: (chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule
example:
speech part: noun
synonyms:
definition: a group of people migrating together (especially in some given time period)
example:
speech part: noun
synonyms: