1. (noun)severe combined immunodeficiency, severe combined immunodeficiency disease, SCID a congenital disease affecting T cells that can result from a mutation in any one of several different genes; children with it are susceptible to infectious disease; if untreated it is lethal within the first year or two of life Synonyms: severe combined immunodeficiency, severe combined immunodeficiency disease
Synonyms and Antonyms of SCID 
