| Word | Definitions | Synonyms |
|---|---|---|
| agammaglobulinemia | (noun) a rare immunological disorder characterized by the virtual absence of gamma globulin in the blood and consequent susceptibility to infection | - |
| hypogammaglobulinemia | (noun) an abnormally low concentration of gamma globulin in the blood and increased risk of infection | - |
| maglev | (noun) high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction | Synonyms: magnetic levitation |