Meaning ofregressin English

Verb

1. to move backwards; devolve
   The patient's tumor began to regress after treatment.
2. to redevelop past behaviors (childhood habits)
   The company's sales will regress if they don't innovate.
3. to reduce in severity (tumors, etc.); decrease
   The child started to regress to old habits during the summer break.
4. to analyze data (statistical variables)
   The researchers used statistical models to regress the data and identify trends.