Crossword Genius

Time for a different one! (3)

Ross

I believe the answer is:

eon

'time' is the definition.
(I know that eon is a type of geologic time)

'different one' is the wordplay.
'different' indicates anagramming the letters (letters placed in a different order).
'one' anagrammed gives 'EON'.

'for a' acts as a link.

(Other definitions for eon that I've seen before include "Very long age" , "Prolonged period" , "Vast period" , "Immense period" , "An immense time" .)

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