metamorphose

/ˌmɛtəˈmɔrfoʊz/
verb
  1. To change or transform into a completely different form or state, often in a dramatic or natural way.
    • A caterpillar will metamorphose into a butterfly inside its chrysalis.
    • Over the summer, the shy girl seemed to metamorphose into a confident young woman.
    • The small startup metamorphosed into a global corporation within a decade.