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

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

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


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Origin of immunodeficiency

First recorded in 1970–75; immuno- + deficiency

OTHER WORDS FROM immunodeficiency

im·mu·no·de·fi·cient, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for immunodeficiency

/ (ˌimjʊnəʊdɪˈfɪʃənsɪ) /


a deficiency in or breakdown of a person's immune system
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for immunodeficiency

[ ĭm′yə-nō-dĭ-fĭshən-sē, ĭ-myōō- ]


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

Other words from immunodeficiency

im′mu•no•de•ficient adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for immunodeficiency

[ ĭm′yə-nō-dĭ-fĭshən-sē, ĭ-myōō′- ]

The inability to produce a normal immune response, caused by an acquired or inherited disease.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.