discontinuity

/ˌdɪsˌkɑntəˈnuəti/
noun
  1. A lack of consistency or connection; a break or gap in a sequence or process.
    • The film's plot had a noticeable discontinuity between the first and second acts.
    • There was a discontinuity in the data, making the results hard to interpret.
    • Geologists study rock layers for signs of discontinuity.