at·a·vism noun \ˈa-tə-ˌvi-zəm\
Definition of ATAVISM
1
a : recurrence in an organism of a trait or character typical of an ancestral form and usually due to genetic recombination
b : recurrence of or reversion to a past style, manner, outlook, approach, or activity <architectural atavism>
2
: one that manifests atavism : throwback
— at·a·vis·tic adjective
— at·a·vis·ti·cal·ly adverb
Origin of ATAVISM
French atavisme, from Latin atavus ancestor, from at- (probably akin to atta daddy) + avus grandfather
First Known Use: 1833
Definition source: http://www.merriam-webster.com
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