The definition of a chain of command is an official hierarchy of authority that dictates who is in charge of whom and of whom permission must be asked.
(noun)An example of chain of command is when an employee reports to a manager who reports to a senior manager who reports to the vice president who reports to the CEO. The CEO makes final decisions binding on everyone, followed by the vice president and so on down the line.
See chain of command in Webster's New World College Dictionary
See chain of command in American Heritage Dictionary 4
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