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Webster 1913 Edition
Regression
Re-gres′sion
(r?-gr?sh′?n)
, Noun.
[L.
regressio
: cf. F. régression
.] The act of passing back or returning; retrogression; retrogradation.
Sir T. Browne.
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.
Webster 1828 Edition
Regression
REGRES'SION
,Noun.