fat cell

noun

: a specialized cell of adipose tissue that stores excess energy in the form of triglyceride droplets : adipocyte
When food is not available and insulin levels fall, the fat cells release triglycerides back into the bloodstream, where they are transported to the liver and broken down into ketones, which can serve as fuel for muscle and the brain.Jeffrey S. Flier et al.
Cellulite is formed by a collection of fat cells around the fibrous cords that attach skin to muscle.Jeannie Ralston

Examples of fat cell in a Sentence

Recent Examples on the Web
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As a result, differentiation of new fat cells is reduced, along with fat accumulation. Bronwyn Thompson, New Atlas, 7 May 2025 With this method, stem cells are grafted together with the fat and may work quicker to develop these vascularization processes, resulting in better outcomes for the survival of fat cells. Parizaad Khan Sethi, Allure, 2 May 2025 Leptin is secreted by fat cells and binds to the brain's hypothalamus (like ghrelin). Brittany Lubeck, Ms, Rdn, Verywell Health, 14 Apr. 2025 The ballooning visceral fat cells along with the fat in your organs can then release chemicals that set off alarm bells for your immune system, triggering a chronic state of inflammation—which ups your risk for conditions like heart disease, type 2 diabetes, and cancer. Erica Sloan, SELF, 26 Mar. 2025 See All Example Sentences for fat cell

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of fat cell was in 1840

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Cite this Entry

“Fat cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fat%20cell. Accessed 20 May. 2025.

Kids Definition

fat cell

noun
: any of the fat-containing cells that make up the connective tissue in which bodily fat is stored

Medical Definition

fat cell

noun
: a specialized cell of adipose tissue that stores excess energy in the form of triglyceride droplets : adipocyte
When food is not available and insulin levels fall, the fat cells release triglycerides back into the bloodstream, where they are transported to the liver and broken down into ketones, which can serve as fuel for muscle and the brain.Jeffrey S. Flier et al.
compare lipocyte

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