regression

C1 · Advanced Uncountable noun Mathematics Technical · Academic

n. a mathematical way to see how one thing affects another.

n. a statistical method for estimating the relationships among variables, typically to determine how a dependent variable changes when independent variables vary.

“The researcher used a linear regression to predict house prices based on their size.”

“By performing a multiple regression analysis, the economists were able to isolate the impact of interest rates on consumer spending patterns.”

C1 · Advanced Countable noun Computing Technical

n. when a computer problem that was fixed before happens again after a new update.

n. the reappearance of a previously resolved functional defect following a code change or software update.

“The latest update caused a regression that broke the login screen.”

“The development team implemented automated regression testing to ensure that new features did not inadvertently compromise existing system stability.”

C2 · Proficiency Uncountable noun Medicine Technical · Formal

n. the process of a tumor or a disease getting smaller or less serious.

n. the lessening or disappearance of the symptoms or physical size of a disease, particularly a tumor.

“The doctors were pleased to see a regression of the tumor after the first round of treatment.”

“Spontaneous regression of this particular type of carcinoma is rare, making the patient's recovery a subject of significant clinical interest.”

C2 · Proficiency Uncountable noun Technical · Academic

n. behaving like a younger person or a child, often because of stress.

n. a defense mechanism leading to the temporary or long-term reversion of the ego to an earlier stage of development.

“Under extreme pressure, some people show signs of emotional regression.”

“The therapist identified the patient's sudden outbursts as a form of psychological regression triggered by childhood trauma.”