agammaglobulinemia
noun [ U ] medical specialized uk/əˌɡæm.ə.ɡlɒb.jə.lɪˈniː.mi.ə/ us/eɪˌɡæm.əˌɡlɑːb.jə.lɪˈniː.mi.ə/
无丙种球蛋白血症
a condition in which there are not enough gamma globulins (= protein that gives protection against diseases) in the blood