• (RP) IPA: /ˌdɪskɒntɪˈnjuːɪti/
  • (GA) IPA: /ˌdɪskɑntɪˈnuːɪti/

discontinuity (plural discontinuities)

  1. A lack of continuity, regularity or sequence; a break or gap. [from 16th c.]
    • 2012, George Dyson (science historian), Turing's Cathedral, Penguin 2013, p. 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

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