Returning student doctor not entirely the same (4)
I believe the answer is:
idem
'the same' is the definition.
(Latin for 'the same', used in citations)
'returning student doctor not entirely' is the wordplay.
'returning' says the letters should be written backwards.
'student' becomes 'edi' (I am not sure about this - if you are sure you should believe this answer much more).
'doctor' becomes 'mo' (medical officer).
'not entirely' means to remove the last letter.
'edi' backwards is 'ide'.
'mo' with its last letter removed is 'm'.
'ide'+'m'='IDEM'
Can you help me to learn more?
(Other definitions for idem that I've seen before include "[DOUBLE]" , "The same for an odd dime" , "No longer employed" , "The same-in Latin" , "The same (as just mentioned) (Latin)" .)