Migration Definition

mī-grāshən
migrations
noun
The act of migrating.
Webster's New World
A group of people, or of birds, fishes, etc., migrating together.
Webster's New World
The shifting of one or more atoms from one position in the molecule to another.
Webster's New World
The movement of ions toward an electrode, under the influence of electromotive force.
Webster's New World
other
The seasonal movement of a complete population of animals from one area to another. Migration is usually a response to changes in temperature, food supply, or the amount of daylight, and is often undertaken for the purpose of breeding. Mammals, insects, fish, and birds all migrate. The precise mechanism of navigation during migration is not fully understood, although for birds it is believed that sharp eyesight, sensibility to the Earth's magnetic field, and the positions of the Sun and other stars may play a role.
American Heritage Science
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Other Word Forms of Migration

Noun

Singular:
migration
Plural:
migrations

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