Definition of regression noun from the Oxford Advanced Learner's Dictionary



BrE BrE//rɪˈɡreʃn//
; NAmE NAmE//rɪˈɡreʃn//
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[uncountable, countable] regression (to something) the process of going back to an earlier or less advanced form or state He began to show signs of regression to his childhood. Word Originlate Middle English: from Latin regressio(n-), from regredi ‘go back, return’, from re- ‘back’ + gradi ‘walk’.
See the Oxford Advanced American Dictionary entry: regression