bicursal,a.Geom.|baɪˈkɜːsəl| [f. bi-2 + L. cursus course + -al.] Of a curve: having two paths. 1873Cayley Math. Papers (1895) VIII. 181 A curve of deficiency 1 may be termed bicursal.1876Ibid. (1896) IX. 582 The bicursal sextic has in general 9 nodes.