brown fat

noun

: a mammalian heat-producing tissue occurring especially in human fetuses and newborn infants and in hibernating animals

called also brown adipose tissue

Examples of brown fat in a Sentence

Recent Examples on the Web
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At slower vertical climbing rates, calorie burn rates were higher than normal at 32 degrees, because the subjects were spending extra energy keeping themselves warm by shivering and activating their brown fat. Alex Hutchinson, Outside Online, 14 Feb. 2025 Brown adipose tissue, also known as brown fat, is a particular type of fat that can produce heat and increase the amount of calories the body burns.12 6. Lindsey Desoto, Rd, Ld, Verywell Health, 29 Jan. 2025 Less brown fat may help explain why some people with obesity can have lower body temperatures than those who aren’t obese, and why there has been a decline in average body temperature in the U.S. since the industrial revolution. Christopher Damman, Discover Magazine, 12 Sep. 2024 Please Mind the Microbiome Gap A healthy microbiome produces a full range of beneficial metabolites that support calorie-burning brown fat, muscle endurance and metabolic health. Christopher Damman, Discover Magazine, 12 Sep. 2024 See All Example Sentences for brown fat

Word History

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of brown fat was in 1902

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Cite this Entry

“Brown fat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brown%20fat. Accessed 27 Feb. 2025.

Medical Definition

brown fat

noun
: a mammalian heat-producing tissue occurring especially in human fetuses and newborn infants and in hibernating animals

called also brown adipose tissue

Last Updated: - Updated example sentences
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