archallaxis

noun
ar·​chal·​lax·​is | \ˌärkəˈlaksə̇s\
plural archallaxes\ -​kˌsēz \

Definition of archallaxis 

biology

: the early deviation from an ancestral developmental pattern eliminating recapitulation

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History and Etymology for archallaxis

New Latin, from archi- + Greek allaxis exchange, barter, from allassein to exchange, from allos other

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