Crossword Genius

CO manifested in muscle oxidation (4)

Ross

I believe the answer is:

cleo

'co manifested' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'in muscle oxidation' is the wordplay.
'in' indicates a hidden word.
'CLEO' is hidden in the letters of 'muscle oxidation'.

(Other definitions for cleo that I've seen before include "Carry on -- (1964 film)" , "She ruled" , "Woman" , "Ms Laine - one of the 14 films" , "Jazz singer, ___ Laine" .)

I've seen this clue in The Guardian.
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