echelon - definition and synonyms

noun [countable] 

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/ˈeʃəlɒn/
singularechelon
pluralechelons
  1. 1
    one of the levels of status or authority in an organization, or the people at that level
    upper/lower echelons:

    the upper echelons of power

  2. 2
    an arrangement of soldiers, ships, or aircraft in which each one is slightly to the right or left of the one in front