What is the meaning of the word "xanthoma disseminatum"?

Definitions:

  1. An abnormal accumulation of lipid-laden histiocytes (immune cells) within the skin and mucous membranes, leading to the formation of yellowish or reddish-brown papules and nodules. copy to clipboard NOUN
  2. Is a rare form of non-Langerhans cell histiocytosis, which is a group of disorders characterized by the proliferation of certain types of immune cells. copy to clipboard NOUN