IPA: /ˌpeɪdəˈmɔːrfɪk/
KK: /ˌpɛɪdəˈmɔrfɪk/
This word describes something that keeps or shows features typical of young or juvenile forms, even in adulthood.
Some species of frogs are paedomorphic, as they retain their tadpole-like characteristics throughout their lives.
Paedomorphic → It is formed from "paedo-" (from Greek "pais", meaning child) and "morphic" (from Greek "morphē", meaning form or shape). The word describes the condition of retaining juvenile features in the adult form.
Think of 'child' ('paedo-') and 'form' ('morphic') to remember that 'paedomorphic' refers to retaining the form of a child.