Solving or dissolving produces it (8)

I believe the answer is:

solution

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'solving' is the definition.
(thesaurus)

I don't understand the rest of the clue.

(Other definitions for solution that I've seen before include "you're currently seeking?" , "Answer (to a puzzle)" , "A mixture of liquid substances is the answer" , "Drink" , "Key" .)

I've seen this clue in The Globe and Mail.

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