'Regression' definitions:

Definition of 'regression'

From: WordNet
noun
An abnormal state in which development has stopped prematurely [syn: arrested development, fixation, infantile fixation, regression]
noun
(psychiatry) a defense mechanism in which you flee from reality by assuming a more infantile state
noun
The relation between selected values of x and observed values of y (from which the most probable value of y can be predicted for any value of x) [syn: regression, simple regression, regression toward the mean, statistical regression]
noun
Returning to a former state [syn: regression, regress, reversion, retrogression, retroversion]

Definition of 'Regression'

From: GCIDE
  • 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]

Synonyms of 'regression'

From: Moby Thesaurus