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English definition of “formation”

formation

noun     /fɔːˈmeɪ.ʃən/ US  /fɔːr-/
C2 [C] the way something is naturally made or the way it has been arranged: a rock formation cloud formationsCreating and producingInventing, designing and innovation C2 [U] the development of something into a particular thing or shape: the formation of a crystalCreating and producingInventing, designing and innovation in formation Activities that are done in formation are done in a pattern by a number of people, vehicles, etc. moving together: marching in close formationActing, being or existing together
(Definition of formation noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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