noun a previous issue or edition of a magazine or newspaper
adjective referring to something that is outdated or no longer current
In the publishing industry, 'back number' refers to a previous issue of a magazine or journal.
In library science, 'back number' is used to describe older issues of periodicals that are kept for reference purposes.
In the fashion industry, 'back number' can refer to a previous season's collection or a past issue of a fashion magazine.
In the music industry, 'back number' can refer to a previously released album or single.
In the publishing industry, 'back number' can refer to previously published issues of a magazine or journal that are no longer current.
In research and academic settings, 'back number' can be used to refer to past editions of scientific journals or articles that are relevant to a particular study or topic.
Librarians may use the term 'back number' to describe older issues of newspapers, magazines, or other periodicals that are kept in the library's archives for reference purposes.
Archivists may use 'back number' to refer to historical documents, records, or materials that are stored in the archives and are no longer actively used or displayed.