migration

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the movement of persons from one country or locality to another
noun a group of people migrating together (especially in some given time period)
noun (chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule

From Middle French migration and its source, Latin migrātiō, from the participle stem of migrō (“to migrate”). Morphologically migrate + -ion.

These journeys are called "migrations." — Children's Literature: A Textbook of Sources for Teachers and Teacher-Training Classes, Charles Madison Curry
The migration is under way. — The Prairie Mother, Arthur Stringer
The migration of the herring is often very irregular. — The Land of the Long Night, Paul B. (Paul Belloni) Du Chaillu

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