discontinuity

noun

point at which a function is not continuous
linguistic phenomenon in which a word/phrase is separated from another word/phrase that it modifies in such a way that a direct connection can’t be established between the two without crossing lines in the tree structure
frontier between rock layers with different properties inside the planet Earth
lack of continuity, regularity or sequence; a break or gap
plane or surface that marks a change in physical or chemical characteristics in a soil or rock mass

Pronunciation: /ˌdɪs.kɒn.tɪˈnjuː.ɪ.ti/ / /ˌdɪs.kɑn.tɪˈnu.ɪ.ti/ / [ˌdɪs.kɑn.tɪˈnu.ɪ.ɾi]

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

A lack of continuity, regularity or sequence; a break or gap.
“structural discontinuity”
“sharp discontinuity”
A point in the range of a function at which it is undefined or discontinuous.
a subterranean interface at which seismic velocities change