discontinuity
Pronunciation:
/ˌdɪskɒntɪˈnjuːɪti//ˌdɪskɑntɪˈnuːɪti/noun
Definitions
A lack of continuity, regularity or sequence; a break or gap.
A point in the range of a function at which it is undefined or discontinuous.
A subterranean interface at which seismic velocities change