Definitions
1.nounThe act of passing back; passage back; return; retrogression.
2.nounThe power or liberty of passing back.
3.nounIn property law, the right of a person (such as a lessee) to return to a property.
4.verbTo move backwards to an earlier stage; to devolve.
5.verbTo move from east to west.
6.verbTo 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."