n. [ L. regressus, fr. regredi, regressus. See Regrede. ]
v. i.
n. [ L. regressio: cf. F. régression. ] The act of passing back or returning; retrogression; retrogradation. Sir T. Browne. [ 1913 Webster ]
Edge of regression (of a surface) (Geom.),
Regression point (Geom.),
a. [ Cf. F. régressif. ] [ 1913 Webster ]
Regressive metamorphism.
adv. In a regressive manner. [ 1913 Webster ]