chrysalis
Concise Oxford English Dictionary © 2008 Oxford University Press:
chrysalis /ˈkrɪs(ə)lɪs/
▶noun (pl. chrysalises) a dormant insect pupa, especially of a butterfly or moth.
■ the hard outer case enclosing a chrysalis.
– origin C17: from L. chrysal(l)is, chrysal(l)id-, from Gk khrusallis, from khrusos ‘gold’ (because of the metallic sheen of some pupae).
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