subdirectory - definition and synonyms

noun [countable] computing 

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/ˈsʌbdɪˌrekt(ə)ri/
singularsubdirectory
pluralsubdirectories
  1. one small area in a computer where information is stored, or a list of the files and programs stored there. A subdirectory is in a directory, often with other subdirectories

    Keep the files in a separate subdirectory.