crown rust

noun Plant Pathology.

a disease of oats and other grasses, characterized by the formation, on the leaves, of orange or black spores, caused by a rust fungus, Puccinia coronata.

Nearby words

  1. crown prosecution service,
  2. crown prosecutor,
  3. crown quarto,
  4. crown roast,
  5. crown rot,
  6. crown saw,
  7. crown vetch,
  8. crown wart,
  9. crown wheel,
  10. crown-heel length

Origin of crown rust

First recorded in 1895–1900 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019