unicursalPronunciation: /ˌjuːnɪˈkəːs(ə)l/Definition of unicursal adjective Mathematics relating to or denoting a curve or surface which is closed and can be drawn or swept out in a single movement. Origin: mid 19th century: from uni- 'one' + Latin cursus 'course' + -alunicursal in other Oxford dictionaries Definition of unicursal in the US English dictionary