regression

noun

re·​gres·​sion ri-ˈgre-shən How to pronounce regression (audio)
1
: the act or an instance of regressing
2
: a trend or shift toward a lower or less perfect state: such as
a
: progressive decline of a manifestation of disease
b(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 skills
c
: reversion to an earlier mental or behavioral level
d
: 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 on the Web The early exit was widely regarded as a sign of regression following the 2022 World Cup, when Berhalter was also at the helm of the U.S. team. Antonio Planas, NBC News, 11 July 2024 The charts use a loess regression to visualize the overall trend. Christopher Flavelle, New York Times, 8 July 2024 Our model combines all this data using multilevel regression with post-stratification (scroll down for more details on this). Kabir Khanna, CBS News, 28 June 2024 Greater online surveillance Internet freedom in Cambodia has experienced a drastic regression under Hun Sen’s rule, rights groups say. Heather Chen, CNN, 27 June 2024 See all Example Sentences for regression 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'regression.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1583, in the meaning defined at sense 1

Time Traveler
The first known use of regression was in 1583

Dictionary Entries Near regression

Cite this Entry

“Regression.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/regression. Accessed 18 Jul. 2024.

Kids Definition

regression

noun
re·​gres·​sion ri-ˈgresh-ən How to pronounce regression (audio)
: an act or the fact of regressing

Medical Definition

regression

noun
re·​gres·​sion ri-ˈgresh-ən How to pronounce regression (audio)
: a trend or shift toward a lower, less severe, or less perfect state: as
a
: progressive decline (as in size or severity) of a manifestation of disease
tumor regression following radiation
b(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 skills
c
: 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 childhoodHavelock Ellis

More from Merriam-Webster on regression

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