brown fat

noun

Definition of brown fat 

: 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

If the pot has more than a tablespoon or so of browning fat, pour the excess out. Bethany Jean Clement, The Seattle Times, "Taking stock: The story of an accidental, excellent post-Thanksgiving recipe," 14 Nov. 2018 Cells in brown fat have an abundance of mitochondria, the powerhouse of the cellular machinery. Deborah Netburn, latimes.com, "Can you skip your regular workout and just shiver instead?," 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, "Can you skip your regular workout and just shiver instead?," 1 May 2018 When brown fat is active, the mitochondria go to work and generate heat. Deborah Netburn, latimes.com, "Can you skip your regular workout and just shiver instead?," 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, "23 Ridiculously Easy Ways to Increase Metabolism," 26 July 2017 One theory behind the cold burn is that chilly weather sets brown fat in motion. Dana Benbow, Indianapolis Star, "Burn calories, live longer: Cold weather isn't all bad," 5 Jan. 2018 Exercise also is believed to prompt small amounts of white fat to transform into brown fat, a particularly desirable form of fat that burns a lot of calories. Gretchen Reynolds, New York Times, "How Exercise Can Make for Healthier Fat," 6 Dec. 2017 What was inside the needles was a browning agent, something that converts white fat to brown fat. Emily Price, Fortune, "In the future, there might be a patch to help you get rid of troublesome love handles.," 18 Sep. 2017

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.

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First Known Use of brown fat

1902, in the meaning defined above

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Last Updated

26 Nov 2018

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The first known use of brown fat was in 1902

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More Definitions for brown fat

brown fat

noun

Medical Definition of brown fat 

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

called also brown adipose tissue

More from Merriam-Webster on brown fat

Rhyming Dictionary: Words that rhyme with brown fat

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