[im-yuh-noh-di-fish-uh n-see, ih-myoo-] /ˌɪm yə noʊ dɪˈfɪʃ ən si, ɪˌmyu-/

noun, plural immunodeficiencies.
impairment of the immune response, predisposing to infection and certain malignancies.
a deficiency in or breakdown of a person’s immune system

1969, from comb. form of immune + deficiency.

immunodeficiency im·mu·no·de·fi·cien·cy (ĭm’yə-nō-dĭ-fĭsh’ən-sē, ĭ-myōō’-)
A disorder or deficiency of the normal immune response. Also called immune deficiency.
im’mu·no·de·fi’cient adj.
(ĭm’yə-nō-dĭ-fĭsh’ən-sē, ĭ-my’-)
The inability to produce a normal immune response, caused by an acquired or inherited disease.


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