n. A sarcoma, or tumor, in which the blood-vessels assume importance from their number, size, and relation to the structure of the tumor.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a rare malignant neoplasm arising from vascular tissue; usually occurs in the breast and skin and is believed to originate from the endothelial cells of blood vessels
Word Usage
"Researchers, including those at the National Cancer Institute, plan to launch three clinical trials later this year in dogs with osteosarcoma, a bone cancer, angiosarcoma, a blood-vessel cancer, and melanoma, the deadly skin cancer."