the sequence of symbols and names indicating the location of a particular file in a hierarchical file system.
British Dictionary definitions for pathnames
pathname
/ˈpɑːθˌneɪm/
noun
1.
(computing) the name of a file or directory together with its position in relation to other directories traced back in a line to the root; the names of the file and each of the parent directories are separated from one another by slashes
pathnames in Science
pathname
(pāth'nām') The fully specified name of a computer file, including the position of the file in the file system's directory structure.