killer cell


noun Immunology.

any of several types of lymphocyte or leukocyte capable of destroying cells that have acquired foreign characteristics, as a tumor cell or virus-infected cell.

British Dictionary definitions for killer cell

killer cell

noun

a type of white blood cell that is able to kill cells, such as cancer cells and cells infected with viruses

Medical definitions for killer cell

killer cell
[ kĭlər ]

n.

A large differentiated T cell that attacks and lyses target cells bearing specific antigens. cytotoxic T cell killer T cell null cell