What greek word means changing shape describing the change from a caterpillar to butterfly?

The Greek word that means "changing shape" and describes the transformation from a caterpillar to a butterfly is μεταμόρφωση (metamorphosis).

It is composed of two parts:

* μετά (meta) - meaning "after" or "beyond"

* μορφή (morphe) - meaning "shape" or "form"

Therefore, μεταμόρφωση literally means "change of shape" or "transformation."