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

Example Sentences

Recent Examples on the Web Other labs around the world have tried to figure out if brown fat matters in other ways. Max G. Levy, Wired, 3 Jan. 2022 But there wasn’t a clear connection to brown fat activity. Max G. Levy, Wired, 3 Jan. 2022 Unlike white fat, which stores calories, brown fat burns them. Nancy Clanton, ajc, 21 Oct. 2021 If the pot has more than a tablespoon or so of browning fat, pour the excess out. Bethany Jean Clement, The Seattle Times, 14 Nov. 2018 Cells in brown fat have an abundance of mitochondria, the powerhouse of the cellular machinery. Deborah Netburn, latimes.com, 1 May 2018 Thanks to Stanford's previous work, the research team already knew that brown fat produces the lipokine 12,13-diHOME during shivering. Deborah Netburn, latimes.com, 1 May 2018 When brown fat is active, the mitochondria go to work and generate heat. Deborah Netburn, latimes.com, 1 May 2018 When the participants in the study slept at 66 degrees opposed to warmer temperatures, their amount of brown fat increased, while the opposite occurred during the months their sleeping areas were warmer. Redbook, 26 July 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brown fat.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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 6 Dec. 2022.

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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