paedomorphosis

/ (ˌpiːdəˈmɔːfəsɪs) /

noun

the resemblance of adult animals to the young of their ancestors: seen in the evolution of modern man, who shows resemblances to the young stages of australopithecines

Medical definitions for paedomorphosis

paedomorphosis

n. pl. pae•do•mor•pho•ses (-sēz′)

Phylogenetic change in which juvenile characteristics are retained in the adult form of an organism.