Woman, university student, intended to remove a cancellation (9)
I believe the answer is:
annulment
'cancellation' is the definition.
(I know that annulment is a type of cancellation)
'woman university student intended to remove a' is the wordplay.
'woman' becomes 'ann' (woman's name).
'university' becomes 'U' (abbreviation for university).
'student' becomes 'L' (as in L-plates for learner drivers).
'intended' becomes 'meant' (to mean something is to intend it).
'to remove' is a deletion indicator.
'meant' with 'a' taken away is 'ment'.
'ann'+'u'+'l'+'ment'='ANNULMENT'
(Other definitions for annulment that I've seen before include "Invalidation" , "Countermand" , "Declaration of invalidity, of a marriage say" , "cancellation" , "dissolution" .)