metamorphosis

met·a·mor·pho·sis

ˌ
medəˈmôrfəsəs/

noun

ZOOLOGY

 

  1. (in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.

    • a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.

      synonyms:

      transformation, change, alteration, conversion, modification, 

      transubstantiation

      "her amazing metamorphosis from wormy caterpillar into beautiful butterfly"