hematopathology

noun

he·​ma·​to·​pa·​thol·​o·​gy

variants or chiefly British haematopathology

hi-ˌmat-ə-pə-ˈthäl-ə-jē  ˌhē-mət-ō- 

plural hematopathologies

: the medical science concerned with diseases of the blood and related tissues

hematopathologist noun

or chiefly British haematopathologist

-ə-jəst