WordNet (r) 3.0 (2006):

SCID
    n 1: 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 [syn:
         severe combined immunodeficiency, severe combined
         immunodeficiency disease, SCID]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SCID
       Service Channel IDentifier