Crossword Genius

If you need an adhesive, this is the answer (8)

Ross

I believe the answer is:

solution

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'is the answer' is the definition.
(I've seen this before)

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(Other definitions for solution that I've seen before include "Key" , "Elucidation - mixture of substances" , "A mixture of liquids" , "The answer to a problem" , "Answer (to a puzzle)" .)

I've seen this clue in The Irish Independent.
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