Real Dictionary

hybridoma in American English
a tissue culture consisting of cancer cells fused to lymphocytes to mass-produce a specific antibody
noun: a hybrid cell made in the laboratory by fusing a normal cell with a cancer cell, usu. a myeloma or lymphoma, in order to combine desired features of each, as the ability of the cancer cell to multiply rapidly with the ability of the normal cell to dictate

hybridoma in British English
noun: a hybrid cell formed by the fusion of two different types of cell, esp one capable of producing antibodies, but of limited lifespan, fused with an immortal tumour cell