Some plan for transforming new growth (8)

I believe the answer is:

neoplasm

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'new growth' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for neoplasm that I've seen before include "Morbid new growth" , "Man lopes into a tumour" , "To find tumour" , "nasty new growth" .)

I've seen this clue in The Times and The Sunday Times.

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