discontinuity

From Late Latin discontinuitās, from discontinuus, equivalent to dis- +‎ continuity.

• (Received Pronunciation) IPA^(key): /ˌdɪs.kɒn.tɪˈnjuːɪ.ti/
• (General American) IPA^(key): /ˌdɪs.kɑn.tɪˈnuːɪ.ti/

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• Rhymes: -uːɪti
• Hyphenation: dis‧con‧ti‧nu‧i‧ty

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