(かいき)

かいき
noun
return; regression; reversion
formalaction
1. return, reversion
The act of returning to a previous state, origin, or fundamental principle.
A return to nature is being called for.
Calls for a return to tradition are growing stronger.
Among people tired of city life, a quiet boom is happening in returning to rural living.
2. regression (statistics/science)
A statistical method for analyzing relationships between variables, or a scientific term for returning to a mean or baseline.
To perform regression analysis.
We fitted a regression line to the data.
Due to the statistical phenomenon of regression to the mean, extreme values tend to gradually approach the average.

Usage

Sense 1 is common in social commentary, lifestyle writing, and cultural discussions. The pattern ~回帰(かいき) (return to ~) is frequently used. Sense 2 is a technical term used in statistics, mathematics, and science.

Common collocations

Similar words

回帰(かいき) implies returning to an original state or principle. 復帰(ふっき) means returning to a position or role after an absence (e.g., 職場(しょくば)復帰(ふっき), returning to work). 帰還(きかん) means returning to one's home or country.