endothelial myeloma en·dot·he·lialmyeloma uncommon noun 1. malignant tumor in bone marrow (usually in the pelvis or in long bones) SynonymsEwing's sarcomaEwing's tumorEwing's tumourendothelial myeloma Related words Broader terms sarcoma WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
