Entire large tin removed (8)
I believe the answer is:
integral
'entire' is the definition.
(I know that entire can be written as integral)
'large tin removed' is the wordplay.
'removed' indicates anagramming the letters (the letters must be move again or be re-moved).
'large'+'tin'='largetin'
'largetin' anagrammed gives 'INTEGRAL'.
(Other definitions for integral that I've seen before include "Mathematical quantity" , "Necessary as part of a whole, like triangle" , "though whole" , "Relating to being complete" , "Of part necessary to the completeness of a whole" .)