D-notice

or D no·tice

[ dee-noh-tis ]
/ ˈdiˌnoʊ tɪs /

noun British.

a government notice sent to newspapers or other publications requesting them to withhold information for reasons of state security.

Origin of D-notice

1960–65; D(efence) notice

British Dictionary definitions for d-notice

D-notice

noun

British an official notice sent to newspapers, prohibiting the publication of certain security information

Word Origin for D-notice

C20: from their administrative classification letter