Developer of Morning Star (6)

I believe the answer is:

amidol

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'developer' is the definition.
Both the answer and definition are singular nouns.
Maybe there's an association between them I don't understand?

'morning star' is the wordplay.
'morning' becomes 'am'.
'star' becomes 'idol' (idol is a kind of star).
'am'+'idol'='AMIDOL'

'of' is the link.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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