The Collaborative International Dictionary of English v.0.48:
Discontinuity \Dis*con`ti*nu"i*ty\, n. Want of continuity or cohesion; disunion of parts. "Discontinuity of surface." --Boyle. [1913 Webster]WordNet (r) 3.0 (2006):
discontinuity n 1: lack of connection or continuity [ant: continuity]