Minute part of it in yolk (4)

I believe the answer is:

tiny

'minute' is the definition.
(I've seen this before)

'part of it in yolk' is the wordplay.
'part of' indicates a hidden word.
'TINY' can be found hidden inside 'it in yolk'.

(Other definitions for tiny that I've seen before include "Little" , "Extremely small" , "Diminutive; small" , "Quite insignificant" , "Minuscule" .)

I've seen this clue in The Telegraph.

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