Create opening design together perhaps? (8)

I believe the answer is:

coinvent

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'together perhaps?' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'create opening design' is the wordplay.
'create opening' becomes 'co' (this might be a standard abbreviation which I don't know about).
'design' becomes 'invent' (I've seen this before).
'co'+'invent'='COINVENT'

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