armillaria root rot

[ ahr-muh-lair-ee-uh ]
/ ˌɑr məˈlɛər i ə /


a widespread rot caused by the honey mushroom, Armillariella mellea, seriously damaging to the roots of various hardwoods, conifers, and other trees.

Origin of armillaria root rot

< New Latin Armillaria an earlier name for the genus, equivalent to Latin armill(a) bracelet (referring to the braceletlike frill on such mushrooms; see armillary) + -aria, feminine of -arius -ary Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019