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Search Result for "regression": 
Wordnet 3.0

NOUN (4)

1. an abnormal state in which development has stopped prematurely;
[syn: arrested development, fixation, infantile fixation, regression]

2. (psychiatry) a defense mechanism in which you flee from reality by assuming a more infantile state;

3. 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]

4. returning to a former state;
[syn: regression, regress, reversion, retrogression, retroversion]


The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

regression n 1: an abnormal state in which development has stopped prematurely [syn: arrested development, fixation, infantile fixation, regression] 2: (psychiatry) a defense mechanism in which you flee from reality by assuming a more infantile state 3: 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] 4: returning to a former state [syn: regression, regress, reversion, retrogression, retroversion]
Moby Thesaurus II by Grady Ward, 1.0:

135 Moby Thesaurus words for "regression": Brownian movement, Freudian fixation, about-face, advance, angular motion, arrested development, ascending, ascent, atavism, axial motion, backflowing, backing, backset, backsliding, backward deviation, backward motion, career, climbing, comedown, course, current, debasement, decadence, decadency, declension, declination, decline, deformation, degeneracy, degenerateness, degeneration, degradation, demotion, depravation, depravedness, depreciation, derogation, descending, descent, deterioration, devolution, disenchantment, downtrend, downturn, downward mobility, downward motion, downward trend, drift, driftage, drop, dying, ebb, ebbing, effeteness, fading, failing, failure, failure of nerve, fall, falling back, falling-off, father fixation, fixation, flight, flip-flop, flow, flux, forward motion, infantile fixation, involution, lapse, libido fixation, loss of tone, mother fixation, mounting, oblique motion, ongoing, onrush, parent fixation, passage, plunging, pregenital fixation, progress, radial motion, random motion, recidivation, recidivism, reclamation, reconversion, recrudescence, recurrence, reflowing, refluence, reflux, regress, rehabilitation, reinstatement, relapse, renewal, restitution, restoration, retreat to immaturity, retrocession, retrogradation, retrogression, retroversion, return, returning, reversal, reverse, reversion, reverting, revulsion, rising, run, rush, set, setback, sideward motion, sinking, slippage, slipping back, slump, soaring, sternway, stream, subsiding, throwback, traject, trajet, trend, turn, turnabout, upward motion, wane
The Free On-line Dictionary of Computing (18 March 2015):

regression 1. A mathematical method where an empirical function is derived from a set of experimental data. 2. regression testing. (1995-03-14)