Business price increases, dropping current merger (10)

'merger' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

'business price increases dropping current' is the wordplay.
I cannot quite see how this works, but
'business' could be 'co' (short for company) and 'co' is located in the answer.
'current' could be 'i' (symbol for electric current) and 'i' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?