Partly computerised development sites (5)
I believe the answer is:
uteri
'development sites' is the definition.
(I've seen this in another clue)
'partly computerised' is the wordplay.
'partly' indicates a hidden word (part of the clue is used).
'UTERI' can be found hidden inside 'computerised'.
(Other definitions for uteri that I've seen before include "baby carriers" , "Places seeing early growth" , "several organs" , "organs, in hospital patients" , "Organs for girls" .)