Immunoglobulin D n. Abbr. IgD The class of antibodies found only on the surface of B cells and possibly functioning as antigen receptors to initiate [more]Immunoglobulin D - Community and Resources
Noun 1. one of the five major classes of immunoglobulins; present in blood serum in small amounts (synonym) IgD (hypernym) immunoglobulin, Ig, immune serum globulin, immune gamma globulin, immune globulin