Definition of metamorphosis noun from the Oxford Advanced Learner's Dictionary

 

metamorphosis

 noun
noun
BrE BrE//ˌmetəˈmɔːfəsɪs//
 
; NAmE NAmE//ˌmetəˈmɔːrfəsɪs//
 
(pl. metamorphoses
BrE BrE//ˌmetəˈmɔːfəsiːz//
 
; NAmE NAmE//metəˈmɔːrfəsiːz//
 
)
[countable, uncountable](formal)
 
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a process in which somebody/something changes completely into something different synonym transformation the metamorphosis of a caterpillar into a butterfly She had undergone an amazing metamorphosis from awkward schoolgirl to beautiful woman. Word Origin late Middle English: via Latin from Greek metamorphōsis, from metamorphoun ‘transform, change shape’.
See the Oxford Advanced American Dictionary entry: metamorphosis