An element of procrastination (3)

I believe the answer is:

tin

'an element' is the definition.
(tin is a kind of element)

'of procrastination' is the wordplay.
'of' indicates a hidden word.
'TIN' is hidden in the letters of 'procrastination'.

(Other definitions for tin that I've seen before include "Silvery metallic element" , "Silvery white metal" , "loaf of bread" , "A silvery-white metal often in cans" , "Cornish metal?" .)

I've seen this clue in the Evening Standard.

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