ring spot

noun

1
: any of various plant diseases caused by viruses (genus Nepovirus of the family Secoviridae) and marked by circular lesions of usually chlorotic or necrotic tissue
2
: a turf disease caused by an ascomycetous fungus (Leptosphaeria korrae synonym Ophiosphaerella korrae) and marked by circular patches or rings of dead grass

Examples of ring spot in a Sentence

Recent Examples on the Web
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There are several forms of patch diseases—necrotic ring spot, summer patch, and brown patch are all similar in appearance and management. Megan Hughes, Better Homes & Gardens, 4 Aug. 2024 Bright yellow to white line patterns, ring spots and/or mosaics on some of the leaves. Rita Perwich, San Diego Union-Tribune, 6 Apr. 2024

Word History

First Known Use

1913, in the meaning defined at sense 1

Time Traveler
The first known use of ring spot was in 1913

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Cite this Entry

“Ring spot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ring%20spot. Accessed 4 Aug. 2026.

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