Sphere of influence. In the field of international relations, a sphere of influence (SOI) is a spatial region or concept division over which a state or organization has a level of cultural, economic, military, or political exclusivity, accommodating to the interests of powers outside the borders of the state that controls it.
Multiple myeloma is named for the clock face appearance of these cancer cells when seen under a microscope. They infiltrate virtually all of a patient's bone marrow. In x-ray images of multiple myeloma, it looks like holes have been punched out of the bone.
Noun. 1. myeloma-a tumor of the bone marrow (usually malignant) composed of cells normally found in bone marrow. malignant neoplasm, malignant tumor, metastatic tumor-a tumor that is malignant and tends to spread to other parts of the body.