Is done differently by an inventor (6)
I believe the answer is:
edison
'an inventor' is the definition.
(I know that Edison is a inventor)
'is done differently' is the wordplay.
'differently' indicates anagramming the letters.
'is'+'done'='isdone'
'isdone' with letters rearranged gives 'EDISON'.
'by' acts as a link.
(Other definitions for edison that I've seen before include "Prolific inventor" , "He came up with microphone" , "Inventor's" , "Science master" , "inventive sort" .)