Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Language: French
Origin: 'set of documents with a label on the back', from dos 'back'

dossier

 noun
     
Related topics: Officials
dos‧si‧er [countable]
PGO a set of papers containing detailed, usually secret information about a person or subject [= file]
dossier on
A firm of detectives produced a dossier on his activities.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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