Open English Wordnet
Nouns
(n)blister rust, white-pine rust, white pine blister rustany of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally
(n)blister rust, Cronartium ribicolafungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host