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myeloid (my-ĕ-loid) adj.
1. like, derived from, or relating to bone marrow. m. leukaemia a variety of leukaemia in which the type of blood cell that proliferates abnormally originates in the blood-forming tissue of the bone marrow. See also Philadelphia chromosome. m. tissue a tissue in the bone marrow in which the various classes of blood cells are produced. See also haemopoiesis.

2. resembling a myelocyte.

3. relating to the spinal cord.