Pleased to have passed (7)

I believe the answer is:

elapsed

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'pleased to have passed' is the definition.
(I've seen this before)

'pleased to have passed' is the wordplay.
'pleased' anagrams to 'ELAPSED'.
However, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for elapsed that I've seen before include "Went by" , "Pleased to have passed" , "Pleased (anag.)" , "Passed, of time" , "Expired" .)

I've seen this clue in The Irish News.

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