Definition of regression
1 : the act or an instance of regressing
2 : a trend or shift toward a lower or less perfect state: such asa : progressive decline of a manifestation of diseaseb (1) : gradual loss of differentiation and function by a body part especially as a physiological change accompanying aging (2) : gradual loss of memories and acquired skillsc : reversion to an earlier mental or behavioral leveld : a functional relationship between two or more correlated variables that is often empirically determined from data and is used especially to predict values of one variable when given values of the others the regression of y on x is linear; specifically : a function that yields the mean value of a random variable under the condition that one or more independent variables have specified values
3 : retrograde motion
Examples of regression in a Sentence
the regression to really childish behavior that boys often undergo when put in large groups
Recent Examples of regression from the Web
Harvey was once one of the best pitchers in baseball before injuries led to a regression; Gsellman helped save the Mets’ 2016 season with surprisingly stout pitching but has struggled as the fifth starter this time around.
The slope for this linear regression line is 0.41 and the intercept is 14.4 kW.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'regression'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of regression
Medical Definition of regression
: a trend or shift toward a lower, less severe, or less perfect state: asa: progressive decline (as in size or severity) of a manifestation of disease tumor regression following radiationb (1): a gradual loss of differentiation and function by a body part especially as a physiological change accompanying aging menopausal regression of the ovaries (2): gradual loss (as in old age) of memories and acquired skillsc: reversion to an earlier mental or behavioral level or to an earlier stage of psychosexual development in response to organismic stress or to suggestion a protective regression towards childhood—Havelock Ellis
Learn More about regression
See words that rhyme with regression Thesaurus: All synonyms and antonyms for regression Spanish Central: Translation of regression Nglish: Translation of regression for Spanish speakers Britannica English: Translation of regression for Arabic speakers Britannica.com: Encyclopedia article about regression
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