Instant importance (6)

I believe the answer is:

moment

I believe this is a double definition.

'instant' is the first definition.
(I know that instant can be written as moment)

'importance' is the second definition.
(I know that moment is a type of significance)

(Other definitions for moment that I've seen before include "Significance; minute" , "An instant in time - important" , "force to turn things around" , "Second, flash" , "Jiffy" .)

I've seen this clue in The Irish Independent.

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