corn smut


noun

a disease of corn caused by a fungus, Ustilago maydis, and characterized by blackish, powdery masses of spores on the affected parts of the plant.

Origin of corn smut

First recorded in 1880–85

British Dictionary definitions for corn smut

corn smut

noun

an ascomycetous parasitic fungus, Ustilago zeae, that causes gall-like deformations on maize grain
the condition produced by this fungus