Abort royal assembly - room for experiment (10)
I believe the answer is:
laboratory
'room for experiment' is the definition.
'laboratory' can be an answer for 'room'. I also know that 'experiment' relates to this answer.
'abort royal assembly' is the wordplay.
'assembly' indicates anagramming the letters.
'abort'+'royal'='abortroyal'
'abortroyal' anagrammed gives 'LABORATORY'.
Can you help me to learn more?
(Other definitions for laboratory that I've seen before include "Place of scientific research" , "Where researchers work" , "Place for experimentation" , "Where litmus paper could be" , "Language-learning facility" .)