Pupate is used in a biological context, mainly when discussing insect life cycles. The entomology professor explained how larvae pupate before becoming adult insects.
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Transformation Process
Pupate refers to a transformative stage, not just any change. It is specific to becoming a pupa. The chrysalis stage is when the caterpillar will pupate.
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Not Human Related
Pupate should not be used to describe human changes, it's only for insects. While teenagers change a lot, they do not pupate like insects.