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Meaning of blister rust

blis'ter rust"

Pronunciation: [key]
— Plant Pathol. Plant Pathol.
  1. a disease, esp. of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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