Crossword Genius

One-ply tyres can be moulded from this synthetic resin (11)

Ross

I believe the answer is:

polystyrene

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'moulded from this synthetic resin' is the definition.
'polystyrene' can be an answer for 'synthetic resin' (polystyrene is a kind of synthetic resin). I am not certain of the remainder of the definition.

'one-ply tyres can be' is the wordplay.
'can be' is an anagram indicator.
'one'+'ply'+'tyres'='oneplytyres'
'oneplytyres' is an anagram of 'POLYSTYRENE'.

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(Other definitions for polystyrene that I've seen before include "Hard plastic" , "Synthetic material - let nosey pry (anag)" , "Synthetic resin used in packing" , "Lightweight synthetic material" , "Synthetic resin for packing, insulation" .)

I've seen this clue in The Telegraph.
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