melaxuma

American  

[mel-uh-koo-muh, -uh-zoo-, -uhk-soo-] / ˌmɛl əˈku mə, -əˈzu-, -əkˈsu- /

noun

Plant Pathology.

1. a disease of trees, especially walnuts, characterized by an inky-black liquid oozing from the affected twigs, branches, and trunk, and by bark cankers, caused by any of several fungi, as Dothiorella gregaria.

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Etymology

Origin of melaxuma

1930–35; < New Latin, irregular < Greek mélā ( s ) black + chýma fluid (with x- representing Greek ch- )