1. (computing) compare two or more files and print any differences between them
   "He used the command to diff the old and new versions of the code"

1. Difference
    
2. Difficult
    
3. Differential

1. (computing) a program which compares two or more files and shows differences between them
   "The developer relied on diff to track changes in the source code"
    
2. (computing) the output of a diff program
   "He sent the diff to his colleague to show the changes made"

Derived forms: diffed, diffing, diffs

Type of: compare, computer program, computer programme [Brit], program, programme [Brit, Cdn]

Encyclopedia: Diff