Question upsetting Open University strange enough to hold a meeting (6)
I believe the answer is:
quorum
'a meeting' is the definition.
(thesaurus)
'question upsetting open university strange' is the wordplay.
'question' becomes 'q'.
'upsetting' says the letters should be written in reverse.
'open university' becomes 'OU'.
'strange' becomes 'rum' (similar in meaning).
'ou' reversed gives 'uo'.
'q'+'uo'+'rum'='QUORUM'
'enough to hold' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for quorum that I've seen before include "Enough people for decision making" , "Minimal amount required" , "Minimum required number of members present for conducting business" , "Minimum number needed to take decisions" , "smallest number acceptable" .)