syn ‧ drome /ˈsɪndrəʊm $ -droʊm/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Modern Latin ; Origin: Greek , 'combination, syndrome' , from syn- ( ⇨ ↑ syn- ) + dramein 'to run' ]
1 . medical an illness which consists of a set of physical or mental problems – often used in the name of illnesses:
people who suffer from irritable bowel syndrome
2 . a set of qualities, events, or types of behaviour that is typical of a particular kind of problem:
‘The underdog syndrome’ is a belief that things are beyond your control.