From Late Latin discontinuitās, from discontinuus, equivalent to .

• (RP) IPA: /ˌdɪs.kɒn.tɪˈnjuːɪ.ti/
• (America) IPA: /ˌdɪs.kɑn.tɪˈnuːɪ.ti/

discontinuity (plural discontinuities)

1. A lack of continuity, regularity or sequence; a break or gap. [from 16th c.]
   • 2012, George Dyson, Turing's Cathedral, Penguin, published 2013, page 57:

     Shock waves are sudden discontinuities propagated in compressible media – usually air.

2. (mathematics) A point in the range of a function at which it is undefined or discontinuous. [from 19th c.]
3. (geology) a subterranean interface at which seismic velocities change

• discontinuous

• German: Diskontinuität