Marvels gained by daughter at Royal Society (7)
I believe the answer is:
wonders
'marvels' is the definition.
(I know this)
'gained by daughter at royal society' is the wordplay.
'gained' becomes 'won' (I've seen this before).
'by daughter at' becomes 'de' (I can't justify this - if you can you should give a lot more credence to this answer).
'royal society' becomes 'RS'.
'won'+'de'+'rs'='WONDERS'
Can you help me to learn more?
(Other definitions for wonders that I've seen before include "Questions, marvels" , "Questons, marvels" , "Prodigies, miracles" , "Curiosities" , "Marvels - there used to be seven of them in the world" .)