discontinuity
Etymology

From Late Latin discontinuitās, from discontinuus, equivalent to .

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

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
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