Bit of earth there - Polish gets translated (11)

I believe the answer is:

lithosphere

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'bit of earth' is the definition.
('lithosphere' is part of 'earth')

'there polish gets translated' is the wordplay.
'there polish' can be anagrammed to 'LITHOSPHERE'.
However, I'm not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for lithosphere that I've seen before include "Rigid part of the earth" , "region of the earth" .)

I've seen this clue in The Daily Express.

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