Worried about research centre being within church’s diameter (9)
I believe the answer is:
concerned
'worried' is the definition.
(similar in meaning)
'about research centre being within church's diameter' is the wordplay.
I cannot really understand how this works, but
'about' could be 'on' and 'on' is located in the answer.
'being' could be 'rn' (RN is an example) and 'rn' is present in the answer.
'diameter' could be 'd' (mathematics) and 'd' is present in the answer.
'church' could be 'ce' (abbreviation for Church of England) and 'ce' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for concerned that I've seen before include "Worried, anxious" , "Involved - worried" , "anxiety" , "Feeling or showing worry or solicitude" .)