atavism

English Thesaurus

1. a reappearance of an earlier characteristic (noun.event)

hypernym	:	recurrence, return,
definition	:	happening again (especially at regular intervals) (noun.event)

derivation	:	atavist, throwback,
definition	:	an organism that has the characteristics of a more primitive type of that organism (noun.person)

derivation	:	atavist, throwback,
definition	:	an organism that has the characteristics of a more primitive type of that organism (noun.person)