The act of passing back; passage back; return; retrogression.
The power or liberty of passing back.
In property law, the right of a person (such as a lessee) to return to a property.
To move backwards to an earlier stage; to devolve.
To move from east to west.
To perform a regression on an explanatory variable.
When we regress Y on X, we use the values of variable X to predict those of Y.