Examination taken by postgraduate students? (4)
I believe the answer is:
test
'examination' is the definition.
(synonyms)
'postgraduate students?' is the wordplay.
'TEST' is hidden in amongst the letters.
But, I am uncertain how the hidden word is indicated.
'taken by' acts as a link.
Can you help me to learn more?
(Other definitions for test that I've seen before include "See if you can" , "Assay" , "Check" , "Ward off" , "type of examination" .)