Discontinuity may refer to:Discontinuity (casting), an interruption in the normal physical structure or configuration of an article Discontinuity, a plane or surface marking a change in physical or chemical properties in a soil or rock mass Discontinuity (mathematics), a property of a mathematical function Discontinuity (linguistics), a property of tree structures in theoretical linguistics Discontinuity (Postmodernism), a conception of history as espoused by the philosopher Michel Foucault. Revolutionary breach of legal continuity A break in continuity (fiction), in literature Fracture (geology), discontinuity in rocks Discontinuity, a step in impedance causing reflections