also called myelocytic leukemia, myelogenous leukemia, or non-lymphocytic leukemia. A type of cancer that starts in the cells that are supposed to mature into different types of blood cells. Myeloid leukemia can be chronic (CML) or acute (AML). There are a number of subtypes of acute myeloid leukemia, some with genetic abnormalities that can affect the success of treatment. See also leukemia, non-myeloid cancers.