: a soluble weakly basic nitrogenous compound CO(NH2)2 that is the chief solid component of mammalian urine and an end product of protein decomposition, is synthesized from carbon dioxide and ammonia, and is used especially in synthesis (as of resins and plastics) and in fertilizers and animal rations
Examples of urea in a Sentence
Recent Examples on the Web
What's happening here is dog urine contains nitrogen and urea, just like fertilizer.
—
Chris McKeown, The Enquirer, 9 Aug. 2025
Plus, the addition of peppermint oil and urea revive the new skin underneath for a velvety feel.
—Mary Honkus, Glamour, 16 July 2025
Nitrogen fertilizers like urea, essential for crops, jumped over 20%, with potash and phosphate up 18% and 20%, respectively.
—Daniel Markind, Forbes.com, 27 June 2025
Inspired by the biology of bone-forming cells, scientists at the University of California, Irvine, along with collaborators across the U.S. and Japan, have discovered a novel way to reuse urea, a chemical found in urine, to manufacture hydroxyapatite, a valuable mineral with a wide range of uses.
—Jenny Lehmann, Discover Magazine, 19 June 2025
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Chris McKeown, The Enquirer, 9 Aug. 2025
Plus, the addition of peppermint oil and urea revive the new skin underneath for a velvety feel.
—Mary Honkus, Glamour, 16 July 2025
Nitrogen fertilizers like urea, essential for crops, jumped over 20%, with potash and phosphate up 18% and 20%, respectively.
—Daniel Markind, Forbes.com, 27 June 2025
Inspired by the biology of bone-forming cells, scientists at the University of California, Irvine, along with collaborators across the U.S. and Japan, have discovered a novel way to reuse urea, a chemical found in urine, to manufacture hydroxyapatite, a valuable mineral with a wide range of uses.
—Jenny Lehmann, Discover Magazine, 19 June 2025
See All Example Sentences for urea
Cite this Entry
“Urea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/urea. Accessed 10 Sep. 2025.
Copy CitationKids Definition
urea
noun
: a soluble nitrogen-containing compound that is the chief solid substance in the urine of mammals and is an end product of protein breakdown
Medical Definition
urea
noun
: a soluble weakly basic nitrogenous compound CH4N2O that is the chief solid component of mammalian urine and an end product of protein decomposition and that is administered intravenously as a diuretic drug
called also carbamide
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