Edited cubism to a minute (9)

I believe the answer is:

subatomic

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'minute' is the definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I can't see?

'edited cubism to a' is the wordplay.
'edited' indicates an anagram.
'cubism'+'to'+'a'='cubismtoa'
'cubismtoa' is an anagram of 'SUBATOMIC'.

Can you help me to learn more?

(Other definitions for subatomic that I've seen before include "Smaller than a basic particle of matter" , "Like 9 across" , "Of smaller than elementary particles" .)

I've seen this clue in the Sydney Morning Herald.

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