Definition: [verb] return to a former or less developed state.
Example: they would not regress to pre-technological tribalism
Definition: [verb] calculate the coefficient or coefficients of regression of (a variable) against or on another variable.
Example: a model in which C and Y are regressed on the same variables
Definition: [verb] move in a retrograde direction.
Example: a planet regularly regresses
Definition: [noun] the action of returning to a former or less developed state.
Example: the regress is a return to Puritan values
Definition: [noun] a series of statements in which a logical procedure is continually reapplied to its own result without approaching a useful conclusion (e.g. defining something in terms of itself).