blister rust


noun Plant Pathology.

a disease, especially of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium.

Origin of blister rust

First recorded in 1915–20

British Dictionary definitions for blister rust

blister rust

noun

a disease of certain pines caused by rust fungi of the genus Cronartium, causing swellings on the bark from which orange masses of spores are released