English noun: immunoglobulin A | |||
| 1. | immunoglobulin A (substance) one of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts | ||
| Synonyms | IgA | ||
| Broader (hypernym) | Ig, immune gamma globulin, immune globulin, immune serum globulin, immunoglobulin | ||