Also, in a short time, etc (3,2,2)
I believe the answer is:
and so on
'etc' is the definition.
(I've seen this before)
'also in a short time' is the wordplay.
'also' becomes 'and' (both can mean in addition).
'in a short time' becomes 'soon' (I've seen this in another clue).
'and'+'soon'='AND SO ON'
(Other definitions for and so on that I've seen before include "Etc - in English and in full" , "Continuing in the same way" , "Etc. (3.2.2)" , "Et cetera" , "I say no more" .)