American English

Definition of formation noun from the Oxford Advanced American Dictionary



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  1. 1[uncountable] the action of forming something; the process of being formed the formation of a new corporate structure evidence of recent star formation in the galaxy
  2. 2[countable] a thing that has been formed, especially in a particular place or in a particular way rock formations
  3. 3[uncountable, countable] a particular arrangement or pattern aircraft flying in formation formation flying The team usually plays in an irregular formation.
See the Oxford Advanced Learner's Dictionary entry: formation

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