leaf disease

noun

1

: a disease localized in the foliage

2

: a coffee disease caused by a rust fungus (Hemileia vastatrix)

called also coffee disease

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now