Treat marine as a person of mixed parentage (9)

I believe the answer is:

amerasian

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'person of mixed parentage' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'treat marine as a' is the wordplay.
'treat' indicates anagramming the letters.
'marine'+'as'+'a'='marineasa'
'marineasa' anagrammed gives 'AMERASIAN'.

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I've seen this clue in The Guardian.

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