Main Entry: an·gio·sar·co·ma Pronunciation: "an-jE-O-sär-'kO-m& Function: noun Inflected Form: pluralan·gio·sar·co·masoran·gio·sar·co·ma·ta/-m&t-&/ : a rare malignant vascular tumor(as of the liver or breast)
angiosarcoma an·gi·o·sar·co·ma (ān'jē-ō-sär-kō'mə) n. A rare malignant tumor occurring most often in the breast and skin and believed to originate from the endothelial cells of blood vessels.