Wheat Rust Definition

noun
Any of several diseases of wheat caused by rust fungi, especially a destructive stem rust characterized by reddish blisters that turn black at the end of the growing season.
American Heritage
A disease of wheat, caused by various rust fungi; esp., any of numerous stem rusts caused by a fungus (Puccinia graminis) harbored by certain barberries.
Webster's New World
Synonyms:
  • Puccinia graminis