obesity

noun

obe·​si·​ty ō-ˈbē-sə-tē How to pronounce obesity (audio)
Synonyms of obesitynext
: a condition characterized by the excessive accumulation and storage of fat in the body
Obesity affects not just appearance, but disease processes as well.Malorye Allison

Examples of obesity in a Sentence

obesity has been linked to a number of health risks, such as heart disease
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.
But today’s rampant culture of injection did not have its breakthrough moment until early summer 2021, when the FDA signed off on semaglutide, the ingredient in Ozempic, as a treatment for obesity. Daniel Engber, The Atlantic, 26 May 2026 Historically, Medicare hasn’t covered obesity drugs. Darius Tahir, USA Today, 25 May 2026 Eli Lilly's latest GLP-1 drug could be yet another powerful weapon in the fight against obesity. Editorial Board, Washington Post, 24 May 2026 The average American has numerous health problems, such as diabetes, obesity and chronic inflammation. Tereza Shkurtaj, PEOPLE, 23 May 2026 See All Example Sentences for obesity

Word History

Etymology

borrowed from Middle French & Latin; Middle French obesité, borrowed from Latin obēsitāt-, obēsitās, from obēsus "fat, stout" + -itāt-, -itās -ity — more at obese

First Known Use

circa 1611, in the meaning defined above

Time Traveler
The first known use of obesity was circa 1611

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Cite this Entry

“Obesity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/obesity. Accessed 29 May. 2026.

Medical Definition

obesity

noun
obe·​si·​ty ō-ˈbē-sət-ē How to pronounce obesity (audio)
plural obesities
: a condition that is characterized by excessive accumulation and storage of fat in the body and that in an adult is typically indicated by a body mass index of 30 or greater

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