melaxuma

noun

mel·​a·​xu·​ma

ˌmeləˈkümə,

-ləkˈsü-,

-ləˈzü-

plural -s

: any of various plant diseases producing dark or black bark cankers

especially : a disease of the walnut caused by the imperfect fungus (Dothiorella gregaria)

Word History

Etymology

New Latin, probably irregular (Greek χ being taken as English x) from mela- + Greek chyma fluid, from chein to pour (melt)

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