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 It has been found to affect the body's metabolism, promoting fat browning (conversion of white fat cells into brown fat cells) and enhancing thermogenesis (the production of heat by the body). Amber Smith, Discover Magazine, 3 Apr. 2024 Researchers found that lower temperatures prompted the body to convert more white adipose tissue into disposable brown fat for heat, according to a 2012 study in the Journal of Clinical Investigation. Max Bennett, Discover Magazine, 8 Feb. 2024 Although people with more brown fat burn more calories when they’re exposed to cold than people who don’t, brown fat alone doesn’t explain the difference. Max G. Levy, WIRED, 6 Jan. 2024 Then, about 20 years ago, scientists discovered brown fat in adult humans. Max G. Levy, WIRED, 6 Jan. 2024 See all Example Sentences for brown fat 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'brown fat.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1902, in the meaning defined above

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

Dictionary Entries Near brown fat

Cite this Entry

“Brown fat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brown%20fat. Accessed 27 Jul. 2024.

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

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