DISCONTINUITY
discontinuity
(noun) lack of connection or continuity
Source: WordNet® 3.1
Etymology
Noun
discontinuity (plural discontinuities)
A lack of continuity, regularity or sequence; a break or gap. [from 16th c.]
(mathematics) A point in the range of a function at which it is undefined or discontinuous. [from 19th c.]
(geology) a subterranean interface at which seismic velocities change
Source: Wiktionary
Dis*con`ti*nu"i*ty, n.
Definition: Want of continuity or cohesion; disunion of parts.
"Discontinuity of surface." Boyle.
Source: Webster’s Unabridged Dictionary 1913 Edition