Crossword Genius

Note article cannot be reduced (6)

Ross

I believe the answer is:

minima

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'cannot be reduced' is the definition.
I can't judge whether this defines the answer.

'note article' is the wordplay.
'note' becomes 'minim' (type of musical note).
'article' becomes 'a' (the indefinite article in English).
'minim'+'a'='MINIMA'

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(Other definitions for minima that I've seen before include "Lowest quantity or amount" , "Lowest possible amounts" , "bottoms" , "Smallest possible amounts" , "unbeatable prices?" .)

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