DA-notice
noun /ˌdiː ˈeɪ nəʊtɪs/
/ˌdiː ˈeɪ nəʊtɪs/
- an official notice from the British government advising the press not to publish certain information because it would harm the country if it were to be made public. 'DA' stands for ''Defence Advisory'. Until 1993 DA-notices were called D-notices and since 2015 they have been called DSMA-notices.