regulation (nom)
Sens 1 : an act of regulating or the condition of being regulated. [source : MWU]
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Sens 2 : an authoritative rule or principle dealing with details of procedure;
especially: one intended to promote safety and efficiency. [source : D'après MWU]
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Sens 3 : a rule or order having the force of law issued by an executive authority
of a government usually under power granted by a constitution or delegated by legislation. [source : MWU]