: 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

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Lartey recommends looking out for the ingredient urea, an emollient (often found in moisturizers) that also softens and smooths the skin on the scalp. Jacqueline Kilikita, refinery29.com, 22 Oct. 2024 This fragrance-free formula focuses on replenishing moisture with its heavy-hitting mix of lipids, squalane, glycerin, urea, and amino acids, which the brand labels as its hydro lipid blend. Sarah Han, Allure, 30 Sep. 2024 There are four ways to test for H. pylori: a urea breath test, a stool antigen test, an upper endoscopy, and a blood test. Elizabeth Yuko, Health, 26 Sep. 2024 Solutions containing salicylic acid, urea, and other compounds can also help. Mark Gurarie, Verywell Health, 26 Sep. 2024 See all Example Sentences for urea 

Word History

Etymology

New Latin, from French urée, from urine

First Known Use

1806, in the meaning defined above

Time Traveler
The first known use of urea was in 1806

Dictionary Entries Near urea

Cite this Entry

“Urea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/urea. Accessed 9 Nov. 2024.

Kids 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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