(comparative more atavistic, superlative most atavistic)
- (biology) of the recurrence of a trait reappearing after an absence of one or more generations due to a chance recombination of genes.
- of a throwback or exhibiting primitivism.
- relating to earlier, more primitive behavior that returns after an absence.
From atavism + -istic, from French atavisme, from Latin atavus (“ancestor”), from at + avus (“grandfather”).