ep·i·the·li·o·ma (ěp'ə-thē'lē-ō'mə) n.
pl.ep·i·the·li·o·ma·ta (-mə-tə) or ep·i·the·li·o·mas A benign or malignant tumor derived from epithelium. ep'i·the'li·om'a·tous (-ŏm'ə-təs) adj.
epithelioma ep·i·the·li·o·ma (ěp'ə-thē'lē-ō'mə) n.pl.ep·i·the·li·o·mas or ep·i·the·li·o·ma·ta (-mə-tə) A benign or malignant tumor derived from epithelium.