Lymphocyte
Full definition of lymphocyte
Noun
lymphocyte
(plural lymphocytes)- (cytology, immunology) A type of white blood cell or leukocyte that is divided into two principal groups and a null group; B-lymphocytes, which produce antibodies in the humoral immune response, T-lymphocytes, which participate in the cell-mediated immune response and the null group, which contains natural killer cells, cytotoxic cells that participate in the innate immune response.