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English definition of “formation”

formation

noun     /fɔːˈmeɪʃən/
DEVELOPMENT [U] the development of something into a particular thing or shape: the formation of a crystalInventing, designing and innovationCreating and producing
SHAPE [C, U] the particular shape of something or the way things are arranged: rock/cloud formations The planes flew overhead in formation (= in a pattern).Patterns and shapes
(Definition of formation noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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