Russian movies cut in a distorted way (9)

I believe the answer is:

muscovite

I'm a little stuck... Click here to teach me more about this clue!

'russian' is the definition.
(I know that Muscovite is a type of russian)

'movies cut in a distorted way' is the wordplay.
'movies cut' can be anagrammed to 'MUSCOVITE'.
However, I'm not sure how this is indicated.

Can you help me to learn more?

(Other definitions for muscovite that I've seen before include "Russian" , "A native of Moscow" , "A citizen of Moscow" .)

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

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