Dictionary.com

urea

[ yoo-ree-uh, yoor-ee-uh ]
/ yʊˈri ə, ˈyʊər i ə /
Save This Word!

noun
Biochemistry. a compound, CO(NH2)2, occurring in urine and other body fluids as a product of protein metabolism.
Chemistry. a water-soluble powder form of this compound, obtained by the reaction of liquid ammonia and liquid carbon dioxide: used as a fertilizer, animal feed, in the synthesis of plastics, resins, and barbiturates, and in medicine as a diuretic and in the diagnosis of kidney function.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.
Also called carbamide.

Origin of urea

1800–10; <New Latin <French urée; ultimately <Greek oûron urine or oureîn to urinate; see uro-1

OTHER WORDS FROM urea

u·re·al, u·re·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use urea in a sentence

British Dictionary definitions for urea

urea
/ (ˈjʊərɪə) /

noun
a white water-soluble crystalline compound with a saline taste and often an odour of ammonia, produced by protein metabolism and excreted in urine. A synthetic form is used as a fertilizer, animal feed, and in the manufacture of synthetic resins. Formula: CO(NH 2) 2Also called: carbamide

Derived forms of urea

ureal or ureic, adjective

Word Origin for urea

C19: from New Latin, from French urée, from Greek ouron urine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for urea

urea
[ yu-rēə ]

The chief nitrogen-containing waste product excreted in the urine of mammals and some fish. It is the final nitrogenous product in the breakdown of proteins by the body, during which amino groups (NH2) are removed from amino acids and converted into ammonium ions (NH4), which are toxic at high concentrations. The liver then converts the ammonium ions into urea. Urea is also made artificially for use in fertilizers and medicine. Chemical formula: CON2H4.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK