ˌmīəˈlōsə̇s noun
( plural myelo·ses -ōˌsēz)
Etymology: New Latin, from myel- + -osis
1.
a. : the proliferation of marrow tissue to produce the changes in cell distribution typical of myelogenous leukemia
b. : leukemia ; especially : myelogenous leukemia
2. : the formation of a tumor of the spinal cord