lymphoma

n. any of a number of malignant tumors which affect the lymph nodes and other lymphoid tissues (Medicine)

Lymphoma is a type of cancer that originates in lymphocytes (a type of white blood cell in the vertebrate immune system). There are many types of lymphoma. Lymphomas are part of the broad group of diseases called hematological neoplasms.In the 19th and 20th centuries the affliction was called Hodgkin's Disease, as it was discovered by Thomas Hodgkin in 1832. Colloquially, lymphoma is broadly categorized as Hodgkin's lymphoma and non-Hodgkin lymphoma (all other types of lymphoma). Scientific classification of the types of lymphoma is more detailed.
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Lymphoma /lym·pho·ma/ any neoplastic disorder of lymphoid tissue. Often used to denote malignant l. [more]Lymphoma - Community and Resources

Noun
1. a neoplasm of lymph tissue that is usually malignant; one of the four major types of cancer
(hypernym) cancer, malignant neoplastic disease
(hyponym) Hodgkin's disease

n. lymphoma, tumor of the lymphatic tissue (Medicine)