immunodeficiency

noun, plural im·mu·no·de·fi·cien·cies.

1. impairment of the immune response, predisposing to infection and certain malignancies.

noun

1. a deficiency in or breakdown of a person’s immune system

n.

1969, from comb. form of immune + deficiency.

n.

1. A disorder or deficiency of the normal immune response.immune deficiency

1. The inability to produce a normal immune response, caused by an acquired or inherited disease.