The recurrence, or a tendency to a recurrence, of the original type of a species in the progeny of its varieties; resemblance to remote rather than to near ancestors; reversion to the original form.

The recurrence of any peculiarity or disease of an ancestor in a subsequent generation, after an intermission for a generation or two.

recurrence of or reversion to a past style, outlook, approach, or manner.

is a term first used by Cesare Lombroso and other early supporters of the positivist school of criminology. It refers to a biological condition that allegedly renders the recipient incapable of living within the social norms of a society.