| a group of rare congenital disorders in which both cell-mediated and humoral immunity are lacking, causing susceptibility to a wide variety of illnesses and an inability to live in a normal environment. Abbreviation: SCID |
| severe combined immunodeficiency n. Abbr. SCID A usually fatal congenital disorder of the immune system in which the body is unable to produce enough B cells and T cells to resist infection. |
severe combined immunodeficiency se·vere combined immunodeficiency (sə-vǐr')
n.
Abbr. SCID
A usually fatal congenital immune system disorder in which the body is unable to produce enough B cells and T cells to resist infection.