lymphoma

from WordNet (r) 3.0 (2006)

lymphoma
    n 1: a neoplasm of lymph tissue that is usually malignant; one
         of the four major types of cancer

from The Collaborative International Dictionary of English v.0.48

Lymphoma \Lym*pho"ma\, n. [NL. See {Lymph}, and {-oma}.] (Med.)
   A tumor having a structure resembling that of a lymphatic
   gland; -- called also {lymphadenoma}.
   [1913 Webster]

   {Malignant lymphoma}, a fatal disease characterized by the
      formation in various parts of the body of new growths
      resembling lymphatic glands in structure.
      [1913 Webster]