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[mass noun] A colourless crystalline compound which is the main nitrogenous breakdown product of protein metabolism in mammals and is excreted in urine.
- ‘The waste products of protein metabolism are urea and to a lesser extent uric acid and creatinine.’
- ‘Lactate and urea are also present in sweat, as both are secreted by the sweat glands.’
- ‘This enzyme breaks down any urea in the stomach to ammonia and carbon dioxide’
- ‘Within a week, his blood urea and creatinine, the two parameters that reflected the kidney functioning were found to be abnormal.’
- ‘Also, excess urea from the protein pulls extra water into the kidneys, so dissolved calcium is expelled.’
- ‘One of the main functions of the kidneys is the removal from the body of waste products such as urea, uric acid, and creatinine.’
- ‘In normal sweating, urea, lactic acid, and potassium ions are very concentrated.’
- ‘The principle of the set-up is to remove accumulating waste products, mainly urea, from the body.’
- ‘This result indicates also that urea is likely to destabilize the formation of hydrogen bonds.’
- ‘The chief constituent of the nitrogenous wastes in urine is urea, a product of protein decomposition.’
Early 19th century: modern Latin, from French urée, from Greek ouron urine.
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