Found 1 items, similar to cuspidal edge.
English → English (gcide) Definition: cuspidal edge Regression \Re*gres"sion\ (r?*gr?sh"?n), n. [L. regressio: cf. F. r['e]gression.] The act of passing back or returning; retrogression; retrogradation. --Sir T. Browne. [1913 Webster] Edge of regression (of a surface) (Geom.), the line along which a surface turns back upon itself; -- called also a cuspidal edge. Regression point (Geom.), a cusp. [1913 Webster]