panmyelophthisis
noun
pan·my·e·lo·phthi·sis
| \ -ˌmī-ə-lō-ˈt(h)ī-səs, -ˈt(h)is-əs
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plural panmyelophthises\ -ˈt(h)ī-ˌsēz, -ˈt(h)is-ˌēz
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Medical Definition of panmyelophthisis
: wasting or degeneration of the blood-forming elements of the bone marrow