Theres nothing in twisting yarn to form material (5)

I believe the answer is:

rayon

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'material' is the definition.
(I know that rayon is a type of material)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for rayon that I've seen before include "Artificial material" , "Man-made fabric" , "Silklike material" , "Viscose fibre" , "Artificial fibre" .)

I've seen this clue in The Irish Independent.

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