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Definition of regulation noun from the Oxford Advanced American Dictionary

        

    regulation

     noun
    noun
    NAmE//ˌrɛɡyəˈleɪʃn//
     
     
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  1. 1[countable, usually plural] an official rule made by a government or some other authority too many rules and regulations fire/safety/building, etc. regulations to comply with the regulations Under the new regulations spending on office equipment will be strictly controlled. the strict regulations governing the sale of weapons The new regulation will come into force on January 1.
  2. 2[uncountable] controlling something by means of rules the voluntary regulation of the press
See the Oxford Advanced Learner's Dictionary entry: regulation