leaf spot

noun

: any of various plant diseases characterized by discolored often circular spots on the leaves

Examples of leaf spot in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
During the hot rainy season some varieties are more susceptible to fungal leaf spots and mildew. Tom MacCubbin, The Orlando Sentinel, 27 June 2026 Spanenberg notes that common diseases include dollar spot, red thread, and leaf spot, among others. The Spruce, 25 June 2026 When a bacterial pathogen is the cause, the middle of the leaf spot will sometimes fall out, creating holes in the leaves. Emily Hayes, Martha Stewart, 16 June 2026 Potential diseases include anthracnose, which begins as round, brown leaf spots with a red or purple ring. Steve Bender, Southern Living, 9 June 2026 See All Example Sentences for leaf spot

Word History

First Known Use

circa 1846, in the meaning defined above

Time Traveler
The first known use of leaf spot was circa 1846

Browse Nearby Words

Cite this Entry

“Leaf spot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leaf%20spot. Accessed 6 Jul. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster