Definition of the Official Secrets Act noun from the Oxford Advanced Learner's Dictionary

 

the Official Secrets Act

 noun
noun
BrE
 
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(in Britain) a law that prevents people giving information if the government wants it to remain secret Culture People who work for many government departments must 'sign the Official Secrets Act', i.e. sign a document saying that they will not discuss their work with anybody who has not also signed the Act. People who break this rule may be sent to prison.