"reorganization" in the noun sense
1. reorganization, reorganisation, shake-up, shakeup
the imposition of a new organization organizing differently (often involving extensive and drastic changes
"a committee was appointed to oversee the reorganization of the curriculum"
"top officials were forced out in the cabinet shakeup"
an extensive alteration of the structure of a corporation or government
"after the takeover there was a thorough reorganization"
"the reorganization was prescribed by federal bankruptcy laws"
Source: WordNet® (An amazing lexical database of English)
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