X-linked agammaglobulinaemianoun [ U ]
uk/ˌeks.lɪŋkt ə.ɡæm.ə.ɡlɒb.jə.lɪˈniː.mi.ə/us/ˈeksˌlɪŋkt eɪˌɡæm.əˌɡlɑb.jə.lɪˈniː.mi.ə/specializedUK US X-linked agammaglobulinemiaa rare genetic condition in which low levels of immunoglobulins (= proteins that destroy harmful bacteria) affect the body's ability to fight infection