Definition of D-notice in English:

D-notice

Line breaks: D-notice

noun

British
  • A government notice issued to news editors requiring them not to publicize certain information for reasons of national security.
    More example sentences
    • On 3 September, the Ministry of Defence issued a D notice about her case.
    • That said you don't really have to silence everyone at an individual level you simply don't allow it into the mass media, in this country it's called a D notice.

Origin

Second World War: D for defence.

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