Definition of diff in English:

diff

noun

informal

verb

[WITH OBJECT]Computing
  • Compare (files) in order to determine how or whether they differ.

    • ‘If you took my advice earlier and keep RPM metadata as a normal part of your backup process, you should be able to diff the two files, thereby speeding up this step considerably.’
    • ‘It uses an ICA-like streaming protocol, but without the diffing or clever region updates that the other uses.’

Pronunciation

diff

/dif//dɪf/