Age of the older generation (3)

I believe the answer is:

era

'age' is the definition.
(both can mean a long time)

'of the older generation' is the wordplay.
'of' indicates a hidden word.
'ERA' can be found hidden inside 'older generation'.

(Other definitions for era that I've seen before include "Geological period" , "Long historical period" , "Long period of time" , "Memorable period" , "Are involved in time span" .)

I've seen this clue in The Irish Independent.

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