In no time art transformed boundary (11)

I believe the answer is:

termination

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'boundary' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.

'in no time art transformed' is the wordplay.
'transformed' indicates anagramming the letters.
'in'+'no'+'time'+'art'='innotimeart'
'innotimeart' with letters rearranged gives 'TERMINATION'.

Can you help me to learn more?

(Other definitions for termination that I've seen before include "End" , "An ending" , "Finish" , "Stopping" , "Conclusion" .)

I've seen this clue in The Telegraph.

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