achromatolysis

noun
achro·​ma·​tol·​y·​sis | \ ˌā-ˌkrō-mə-ˈtäl-ə-səs, ak-ˌrō- How to pronounce achromatolysis (audio) \
plural achromatolyses\ -​ˌsēz How to pronounce achromatolyses (audio) \

Medical Definition of achromatolysis

: disorganization of the achromatic part of a cell