1
: a break in skin or mucous membrane with loss of surface tissue, disintegration and necrosis of epithelial tissue, and often pus
2
: something that festers and corrupts like an open sore
ulcer
verb
Examples of ulcer in a Sentence
Recent Examples on the Web
Over time, the foot becomes misshapen, and ulcers and serious infections can develop.1
What Is Charcot Foot?
—
Isabel Casimiro, Verywell Health, 22 May 2025
The blisters can join together and grow into deep, chronic ulcers.
—Sherri Gordon, Health, 9 May 2025
Beyond its role making overdoses more difficult to manage, xylazine is also linked to devastating skin wounds and ulcers.
—Lilia Pacheco Bufanda, San Diego Union-Tribune, 2 Apr. 2025
Similarly, aloe vera mouthwash reduced the severity of oral mucositis, a condition that causes ulcers and inflammation inside the mouth.
—Brittany Lubeck, Verywell Health, 2 June 2025
See All Example Sentences for ulcer
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Isabel Casimiro, Verywell Health, 22 May 2025
The blisters can join together and grow into deep, chronic ulcers.
—Sherri Gordon, Health, 9 May 2025
Beyond its role making overdoses more difficult to manage, xylazine is also linked to devastating skin wounds and ulcers.
—Lilia Pacheco Bufanda, San Diego Union-Tribune, 2 Apr. 2025
Similarly, aloe vera mouthwash reduced the severity of oral mucositis, a condition that causes ulcers and inflammation inside the mouth.
—Brittany Lubeck, Verywell Health, 2 June 2025
See All Example Sentences for ulcer
Cite this Entry
“Ulcer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ulcer. Accessed 20 Jun. 2025.
Copy CitationKids Definition
ulcer
noun
ul·cer
ˈəl-sər 
: a slow-healing open sore in which tissue breaks down
Medical Definition
ulcer
1 of 2 noun
ul·cer
ˈəl-sər
: a break in skin or mucous membrane with loss of surface tissue, disintegration and necrosis of epithelial tissue, and often pus
a stomach ulcer
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