paedomorphic

/ˌpiːdəˈmɔːrfɪk/
adjective
  1. Having or showing features of a young or juvenile form of an animal or plant in the adult stage.
    • The axolotl is a paedomorphic salamander that keeps its gills into adulthood.
    • The paedomorphic leaves of the plant resemble those of a seedling even when fully grown.
    • Many dog breeds have paedomorphic traits like large eyes and floppy ears that make them look puppy-like.
Synonyms
What does "paedomorphic" mean? | whatsthatwordmean | whatsthatwordmean