histiocytoma
noun
his·tio·cy·to·ma
ˌhis-tē-ō-sī-ˈtō-mə 
plural histiocytomas also histiocytomata
-mət-ə
: a tumor that consists predominantly of macrophages
a malignant fibrous histiocytoma of the spleen
Cite this Entry
“Histiocytoma.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/histiocytoma. Accessed 31 Oct. 2025.
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