Culture has potential for growth here? (5,4)
I believe the answer is:
petri dish
'culture has potential for growth here?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
This is all the clue.
Can you help me to learn more?
(Other definitions for petri dish that I've seen before include "Shallow bowl used to culture bacteria -- priest hid (anag)" , "Shallow plate for lab study" , "Container for growing cultures" , "Type of plate used for culturing bacteria etc" .)