leaf rust

noun

, Plant Pathology.

1. a disease, especially of cereals and other grasses, characterized by rust-colored pustules of spores on the affected leaf blades and sheaths and caused by any of several rust fungi.

Word History and Origins

Origin of leaf rust¹

First recorded in 1860–65

Example Sentences

The only danger in very early planting is that leaf-rust sometimes attacks the forward crop.

From Project Gutenberg